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In addition to standard products, we can also manufacture and provide customized fasteners according to your special demand. Our goal is to achieve a stable supply of high quality products.

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1980

Founded

13

Billions Pcs Supplied

45

Years

Products
Products
Screws & Bolts
Screws and Bolts: Essential Elements in Industrial ConnectionsScrews and bolts are essential fasteners widely used in various industries to create strong, reliable connections between components. The helical threads spiraling around their shafts securely engage materials or corresponding internal threads, ensuring stability and durability.Screws typically feature sharp, aggressive threads designed for direct insertion into pre-drilled holes or various materials like wood, metal, or plastic, creating robust, semi-permanent connections.Available in diverse designs such as self-tapping screws, machine screws, screws for plastics, and Hi-Lo screws, each type serves specific applications in industries like construction, furniture assembly, automotive manufacturing, and electronics.Bolts, in contrast, usually have smoother and less aggressive threads, designed for use with nuts. They are ideal for applications that require easy disassembly and adjustments, commonly used in machinery assembly, automotive structures, and heavy-duty installations.Our company specializes not only in supplying standard specification screws and bolts but also excels in customized production. With advanced manufacturing capabilities, we precisely manufacture customized fasteners according to client drawings and specifications. From selecting optimal materials and thread accuracy to dimensional tolerances, we are dedicated to delivering tailored solutions that meet diverse industrial needs, ensuring optimal performance and quality for your products.Customize what you needH ere are some common materials used for screws and bolts:SpecificationThe most common material for screws and bolts, relatively inexpensive and suitable.Stainless steel304 & 316 well known for their corrosion resistance, making them an excellent choice where exposure to moisture or corrosive substances is a concern.Alloy steelMade from steel combined with other elements to enhance its mechanical properties, including strength and hardness.BrassCorrosion-resistant, great electrical conductivity, commonly used in electrical and decorative applications.Six lobe shaped socketLightweight & corrosion-resistant.AluminumLightweight and highly corrosion-resistant, where both strength and corrosion resistance are critical.C ommon steel classes for screws and bolts include:Class 4.8 / 5.8 / 6.8Low to medium strength, commonly used in applications where high strength is not a primary requirement.Class 8.8 / 10.9 / 12.9Alloy steel, offers increasing levels of tensile and yield strength.C ommon finish types:Zincprovides moderate corrosion resistance.Coppergood corrosion resistance, and excellent conductor of electricity.Nickeloften used for decorative purposes due to shiny appearance.Zinc nickelexcellent corrosion resistance, and longer service life than common zinc finish.Black oxidea chemical finish that provides corrosion resistance and a black appearance.Zinc Phosphateact as a barrier against corrosion by providing a protective layer between the metal substrate and corrosive elements, such as moisture and chemicals.Coatings per automotive standards (RoHs compliance)T ypes of head shapes:Flat headRound headOval headPan headTruss headCheese headBinding headFillister headButton headHex washer headHexagon headT ypes of drives:Hexalobular drive (ISO 10664)Six lobe shaped socketPhillips driveCross recessed type HPozi driveCross recessed type ZHexagon socketHexagonal socket in the head, often used with hex keys (Allen wrenches)Slot driveSingle slot in the screw headOne wayTo be installed easily in one direction but makes removal difficult or impossible without specialized tools. They are used for security purposes.Tamper resistant 6 lobeHave a pin in the center of the 6 lobe recessExternal hexalobular head with small flange (DIN 34800)T ypes of threads:Machine threadSelf tapping threads for thermoplastics (generic alternative)Trilobe threads - DIN 7500Hi-lo threadsSelf-drilling threadsWood screw threadsCutting threadsSheet metal / Self tapping threadFastener Value AddedBolts, in contrast, usually have smoother and less aggressive threads, designed for use with nuts. They are ideal for applications that require easy disassembly and adjustments, commonly used in machinery assembly, automotive structures, and heavy-duty installations.Our company specializes not only in supplying standard specification screws and bolts but also excels in customized production. With advanced manufacturing capabilities, we precisely manufacture customized fasteners according to client drawings and specifications. From selecting optimal materials and thread accuracy to dimensional tolerances, we are dedicated to delivering tailored solutions that meet diverse industrial needs, ensuring optimal performance and quality for your products.
Specialty Parts
Specialty Fasteners Are Designed For Applications Beyond Standard Needs.These fasteners may not be readily available off-the-shelf and may need to be custom-made or sourced from specialized manufacturers. We recognize the critical role that fasteners play as indispensable components in various industries and applications. They contribute significantly to the functionality, safety, efficiency, and longevity of products, machinery, and structures. Without fasteners, many of the things we rely on in our daily lives would not be possible.The primary function of fasteners is to provide the mechanical strength necessary to hold components together and ensure structural integrity. However, when conventional fasteners could not satisfy required level of performance or structural integrity for particular applications, specialty fasteners are customized to address these specific requirements.What is Multi-Station Forging?Multi-station forging is a specialized manufacturing process used to shape and form metal workpieces by subjecting them to a sequence of forging operations at multiple stations within a production line. Each station performs a specific operation simultaneously, and this significantly increases the production rate. Another advantage is to allow for precise control over each forming operation. This results in parts with tighter tolerances and more consistent dimensions, reducing the need for secondary machining operations.When should multi-station forging be considered suitable?This forging process involves applying compressive force to a metal workpiece to deform it and give it the desired shape and properties. This approach allows for efficient and controlled production of complex parts and components. When parts become more complex, sophisticated and challenging to manufacture, Multi-station formers are particularly versatile in creating complicated parts, and possess the advantage of fully completing parts in one manufacturing process at a reasonable cost. Multi-station forging is commonly used in industries such as automotive manufacturing where complex parts and components require precise and sequential operations to achieve the desired final form.What are other advantages?Other advantages inlcude increased productivity, reduced material waste, improved dimensional accuracy, consistent material fiber flow, cost efficiency and enhanced process control. 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border-bottom: 2px solid #ccc; } table.rg-table td:empty { display: none; } table.rg-table .highlight td { background-color: inherit; font-weight: normal; }}InformationMaterialCarbon Steel / Stainless Steel / Alloy SteelStrengthClass 4.8 / 5.8 / 6.8 / 8.8 / 9.8 / 10.9 / 12.9Finish TypesZinc, zinc nickel, zinc flake, phosphate, nickel, copper, black oxide, coatings per automotive standards (RoHs compliance)Thread Locking AdhesivesThree Bond, Precote, Loctite, 3M, nylon patch (approved source)Internal DrivesHexlobular drive (ISO 10664), cross recessed type H (phillips), cross recessed type Z (pozi), and hexagon socketExternal DrivesHex head, External hexalobular head with small flange (DIN 34800)Thread (body) diameterM2 - M30Total (body) LengthUp to 200 mmThe shortest length depends on the screw specifications. If the length exceeds 200 mm, the feasibility of production will be determined based on the specific screw requirements.:
SEMs Screw
A SEMS screw, also known as combination or pre-assembled screws,is a type of fastener that consist of a screw or bolt combined with one or more washers that are permanently attached to it. The washer is preassembled onto the screw and is typically captive even when not tightened. This design helps simplify assembly processes and reduces the risk of losing or misplacing washers during installation. The washers in SEMS screws can have various configurations, such as flat washers, lock washers, external tooth, internal tooth, split lock washer, or combination washers, depending on the specific application requirements. The washers are positioned under the screw head and along the threaded portion.Benefits of using SEMS screws:Cost - effective Solutions: While SEMS may cost more upfront than separate screws and washers, they often save costs through improved assembly efficiency and reduced errors.Reduced Assembly Error Risks: SEMS screws guarantee washer placement and secure attachment, minimizing washer omission or misplacement.Ensured Performance Consistency: SEMS screws maintain washer security for dependable, consistent performance, preventing loosening or detachment.Enhanced Assembly Efficiency: By pre-assembling washers, the need to handle and place individual washers is eliminated, streamlining the production process.Customized to Unique Requirements: SEMS screws can be customized with different washers to suit various application needs, including flat, lock, or internal tooth washers.1) Here are some common materials and strength class:Carbon steel - The most common material for screws and bolts, relatively inexpensive and suitable.Stainless steel - 304 & 316 well known for their corrosion resistance, making them an excellent choice where exposure to moisture or corrosive substances is a concern.Alloy steel - Made from steel combined with other elements to enhance its mechanical properties, including strength and hardness.Class 4.8 / 5.8 / 6.8 - Low to medium strength, commonly used in general-purpose applications where high strength is not a primary requirement.Class 8.8 / 10.9 / 12.9 - Alloy steel, offers increasing levels of tensile and yield strength.2) Recommeded types of finish and pre-applied chemical patches:Finish - zinc, zinc nickel, zinc flake, phosphate, nickel, copper, black oxide, coatings per automotive standards (RoHs compliance)Pre-applied chemical patches - Three Bond, Precote, Loctite, 3M, nylon patch (approved source)3) Types of head shape:Flat head / Round head / Oval head / Pan head / Truss head / Cheese headBinding head / Fillister head / Button head / Hex washer head / Hexagon head4) Types of drives:Hexlobular drive (ISO 10664) - Six lobe shaped socketPhillips drive - Cross recessed type HPozi drive - Cross recessed type ZHexagon socket - Hexagonal socket in the head, often used with hex keys (Allen wrenches)Slot drive - Single slot in the screw headTamper resistant 6 lobe - Have a pin in the center of the 6 lobe recessHexlobular head (DIN 34800)5) Most commonly used washers for assembly include:DIN 6902 - Plain washers for screw and washer assembliesDIN 6903 - Plain washers for tapping screw and washer assembliesDIN 6904 - Curved spring washersDIN 6905 - Spring lock washersDIN 6907 - Serrated lock washers with external teethDIN 6908 - Conical spring washers
Nuts
A metal nut is a type of fastener with a threaded hole. It's typically used with a bolt to fasten materials together.The purpose of a steel nut is to provide a mating thread for a bolt, allowing them to be tightened together and hold objects in place. The bolt passes through a hole in one object, and then the nut is threaded onto the end of the bolt from the other side. By turning the nut in the direction of the bolt's threads, the two pieces are drawn closer together, creating a tight and secure connection. When a nut is tightened onto a bolt, it applies compressive force, clamping the components together and preventing them from coming apart unintentionally.Nuts come in various shapes and sizes, but they all serve the same purpose of providing a secure connection. The most common type is hex nut. Its hexagonal shape allows for easy application of torque using tools such as wrenches or socket wrenches during fastening. They are made of metals like steel, stainless steel, brass, aluminum, titanium, and others, each offering specific properties suited for different applications.Here are some common types of metal nut:Hex Nut: Hex nuts have a hexagonal shape and are among the most common types of nuts.Lock Nut: They often have features such as nylon inserts, serrations, or prevailing torque designs to resist loosening under vibration or torque.Square Nut: Square nuts have a square shape instead of a hexagonal shape.Flange Nut: Flange nuts have a built-in washer-like flange that distributes the load and helps prevent damage to the surface being fastened.Cap Nut: Cap nuts, also known as hex acorn nuts, have a domed top that covers the end of the bolt.Wing Nut: Wing nuts have two large metal "wings" that allow them to be tightened or loosened by hand without the need for tools.Cage Nut: Cage nuts have a spring steel cage that allows them to be easily inserted into square holes in metal panels.Weld Nut: Weld nut is a specialized type of nut designed to be welded onto another object using spot welding.1) Most commonly used materials for nuts:Carbon steel - The most common material for screws and bolts, relatively inexpensive and suitable.Stainless steel - 304 & 316 are renowned for their corrosion resistance, making them ideal for environments exposed to moisture or corrosive elements.Alloy steel - Made from steel combined with other elements to enhance its mechanical properties, including strength and hardness.Titanium - Lightweight and highly corrosion-resistant, where both strength and corrosion resistance are critical.Brass - Corrosion-resistant, great electrical conductivity, commonly used in electrical and decorative applications.Aluminum - Lightweight & corrosion-resistant.2) Common finish types:Zinc - provides moderate corrosion resistance.Copper - good corrosion resistance, and excellent conductor of electricity.Nickel - often used for decorative purposes due to shiny appearance.Zinc nickel - excellent corrosion resistance, and longer service life than common zinc finish.Black oxide - a chemical finish that provides corrosion resistance and a black appearance.Zinc Phosphate - act as a barrier against corrosion by providing a protective layer between the metal substrate and corrosive elements.Coatings per automotive standards (RoHs compliance)
Set screws
A set screw is easily to identify with its headless design and internal driveSet screws also known as socket screws, is a type of threaded fastener that is used to secure components in place. They have a distinctive headless design, which means they don't have a protruding head like typical screws, and are typically driven with a hex wrench or Allen wrench.They are commonly used in various applications where a precise alignment of components is required. They can also be used to prevent components from rotating or moving in an unwanted way. They are often used to fix components onto a shaft, such as securing a gear or pulley to prevent it from slipping. The threaded body of the set screw allows it to be tightened against the surface of the shaft or object, creating a strong clamping force. Set screws are available in various sizes, thread pitches, and lengths to accommodate different applications and requirements. They are widely used in machinery, equipment, electronics, and various industrial applications where a flush, no-head fastening solution is needed.Set screw point typesCup point: The most common type, featuring a hollowed-out end that provides a strong grip on the mating surface (DIN 916 / ISO 4029 )Flat point: Has a flat end, used where minimal surface damage is desired (DIN 913 / ISO 4026)Cone point: Tapered to a sharp point, offering high holding power and precise location (DIN 914 / ISO 4027)Dog point: Has an extended cylindrical tip that fits into a mating hole for alignment (DIN 915 / ISO 4028)Half dog point: Similar to the dog point but with a shorter tip.Knurled point: The knurled surface provides extra grip and holding power in heavy vibration applications.Types of internal drivesHex socket (Allen drive): Features a hexagonal recess that requires an Allen wrench (hex key) for driving.Hexalobular socket (6 lobe): A star-shaped recess with six points that requires a 6 lobe screwdriver or bit.Square socket: Features a square recess that requires a square drive screwdriver or bit.Slotted socket: A single, straight slot that requires a flathead screwdriver.Tamper resistant star socket: Similar to the standard 6 lobe, but with a pin in the center of the recess, requiring a special tamper-resistant 6 lobe driver.Hex Socket with Pin (Security Allen): Similar to the standard hex socket but with a pin in the center, requiring a special security Allen wrench.Common materials and propertiesCarbon Steel: General-purpose, strong and durable; can be heat-treated.Alloy steel: High strength and wear resistance; suitable for heavy-duty applications.Stainless steel: Excellent corrosion resistance; used in harsh environments.Brass: Good electrical conductivity and corrosion resistance.Aluminium: Lightweight and corrosion resistant.
Pins
A fastening pin is a type of mechanical fastener used to join, align, or secure two or more components together. Typically made of steel, a fastening pin is designed for a variety of applications requiring alignment, attachment, or joining of components. They come in various sizes, lengths, and shapes, depending on their intended use. Fastening pins are commonly used in construction, manufacturing, engineering, automotive, and other industries where reliable and secure fastening is essential.Fastening pins offer numerous advantages, including ease of installation and removal, precise alignment, strong and secure fastening, versatility, cost-effectiveness, reusability, resistance to loosening, minimal damage to materials, high load-bearing capacity, and flexibility in design. These benefits make them indispensable in a wide range of applications across various industries, providing reliable and efficient solutions for joining, aligning, and securing components.Types of Fastening Pins:Clevis Pin- It consists of a cylindrical shaft with a head at one end and a hole through the shaft near the opposite end, which is used to secure the pin with a cotter pin or similar fastener.Dowel Pin - Dowel pin is a cylindrical rod, and is designed to fit into corresponding holes in the two components, ensuring precise alignment and strong, secure connections.Taper Pin - Pins that are slightly tapered along their length, allowing them to wedge into a hole and hold components together securely.Grooved Pin- Solid pins with grooves along their length that improve grip and retention in the material.Knurled Pin- They are cylindrical metal fasteners with a textured surface, typically featuring a pattern of ridges or grooves known as knurling. This texture provides enhanced grip when inserted into a hole or surface, making them useful for applications where a secure, non-slip connection is required. Knurled pins are often used in assemblies where disassembly and reassembly are frequent, as the knurling helps prevent loosening due to vibration or movement.
Stamping parts
Stamping parts in fasteners are components created through the process of stampingStamping parts in fasteners refer to components produced through the process of stamping, which involves cutting, shaping, and forming metal sheets into specific shapes using a press and die. Parts that are related to the stamping process include washers, retaining rings, U nuts, cage nuts, and mounting brackets. This is a highly efficient and cost-effective manufacturing method used to create large quantities of identical parts with high precision and accuracy. Stamping offers several advantages, such as fast production rates, high accuracy, repeatability, and material utilization, making it a widely adopted manufacturing technique for mass production of parts.Common types of stamping parts in fastenersFlat Washer - thin, flat, circular components with a hole in the center.Spring Clips - is a type of fastening device designed to securely hold two or more components together.Split Lock Washer -This type of lock washer has a split cut from one end to the center, creating a helical shape.Tooth Lock Washer - Toothed lock washers feature internal or external teeth around the inner or outer circumference.L shape Brackets - is a right-angle support used to provide structural stability and secure components together at a 90-degree angle.Retaining Clips - are a type of fastener used to hold components or assemblies onto a shaft or inside a housing/bore when installed in a groove.Material - Spring steel, stainless steel, aluminium, brassFinish types - Zinc plated silver, phosphated black, plain finish
Turning Parts
Turning is a machining process in which a cutting tool removes material from a rotating workpiece to shape it into a desired cylindrical form.The workpiece rotates about its axis on a lathe, and a cutting tool is fed into the rotating workpiece to remove material and shape it into the desired form. Turning is a common and fundamental machining process used to produce various parts such as shafts, bolts, nuts, and other cylindrical or conical componentsTurning is also capable of producing parts with high precision, smooth surface finishes, and tight dimensional tolerances. CNC (Computer Numerical Control) lathes have further enhanced the turning process by automating the tool movements, allowing for complex shapes and efficient mass production.The material selection for turning parts depends on factors such as mechanical properties, chemical resistance, thermal conductivity, electrical conductivity, cost considerations, and the part's intended use. Different materials offer unique advantages and limitations, and choosing the appropriate material is crucial to achieving the desired performance and functionality of the turned components.Turning parts can be made from a wide range of materials, depending on the specific requirements and applications of the components. Some of the most commonly used materials for turning parts include:ALUMINUMUsing aluminum in CNC precision turning offers several advantages, including ease of machining, natural corrosion resistance, and good conductivity. These properties, along with its cost-effectiveness and compatibility with various surface treatments, make aluminum a preferred material alternative of precision-turned components.STAINLESS STEELStainless steel is favored in turning for its great corrosion resistance, strength, durability, along with its appealing appearance. However, stainless steel can be more challenging to machine compared to softer materials, resulting in higher tool wear and slower machining speed. Despite these challenges, stainless steel remains a popular choice for for commercial, consumer, and medical products where corrosion resistance and mechanical strength are crucial considerations.BRASSBrass is often selected for turning components due to its excellent machinability, corrosion resistance, cost-effectiveness, and attractive golden appearance. Another advantage of brass is its malleability, allowing it to be shaped and formed into intricate and complex designs during turning process. However, it’s important to note that brass’s malleability also means it is softer and may not offer the same mechanical strength as harder metals like steel or stainless steel. Therefore, when selecting brass, it’s important for applications to balance between desired formability and necessary mechanical strength.COPPERCopper is one of the most conductive materials for electricity, making it a preferred choice for machinery requiring reliable electrical connections. Additionally, copper's resistance to heat and high corrosion resistance minimize the risk of deterioration and failure. Its ductility and malleability enable precise and intricate machining, resulting in high-quality finishes.TITANIUMTitanium offers exceptional properties such as high strength-to-weight ratio, excellent corrosion resistance, and biocompatibility, its use in turning presents significant challenges due to difficult machinability, high cost, and specific cutting requirements. These pros and cons must be carefully weighed based on the demands of the specific application. Free cutting steel contains sulfur, lead, and phosphorus to enhance its machinability, resulting in faster machining speeds and reduced tool wear. Therefore, in mass production, free-cutting steels are essential for producing numerous small parts that are subject to low loads and high machining rates. However, free-cutting steels may have reduced corrosion resistance compared to other steels, limiting their suitability for use in corrosive environments.FREE CUTTING STEELFree cutting steel contains sulfur, lead, and phosphorus to enhance its machinability, resulting in faster machining speeds and reduced tool wear. Therefore, in mass production, free-cutting steels are essential for producing numerous small parts that are subject to low loads and high machining rates. However, free-cutting steels may have reduced corrosion resistance compared to other steels, limiting their suitability for use in corrosive environments.
Pre-Applied Adhesives and Sealants
A Pre-Applied Chemical Patch Is Applied To Threads To Enhance Locking, Sealing and Performance.It is a type of adhesive used to secure threaded fasteners, such as screws, bolts, and nuts, in place. Thread locking adhesives work by creating a strong bond between the threads of the fastener and the mating surface. This bond helps to prevent loosening caused by factors such as vibration, thermal expansion an d contraction, or external forces. It also helps to seal the threads, providing some level of resistance to moisture and contaminants.What can we supply ?As a fastener manufacturer, we offer screws, bolts, and nuts with pre-applied chemical patches to enhance thread locking performance and provide effective sealing against loosening and fluid leakage.DIN 267 - 27 (Adhesive coating)Adhesive coating, in the form of micro-encapsulated adhesive, is applied to the threads of screws and bolts. These adhesives activate their bonding properties during the bolting process, effectively preventing the bolts from loosening over time.DIN 267 - 28 (Locking coating)A locking coating is a plastic layer applied to the threads of bolts. Its purpose is to prevent the bolts from completely disengaging when tightened. This coating can be applied either as a complete covering or in the form of strips or spots. It's important to note that while these coatings help prevent complete disengagement, they do not eliminate the possibility of bolts working loose over time.The advantages -Coating locations can be tailored per customer’s application and requirement.Eliminates the need for O-rings, gasket seals and sealant compounds.Saves money and timeCan be applied on internal or external threaded fastenersApplied according to either ISO standard, IFI standard or custom drawings.
Particle cleaning for EV markets
Particle Cleanlinessanalysis service and report are available by request – For automotive fasteners, especially electric vehicles, we can meet the specifications of ISO 16232 & VDA 19.1. Both are widely recognized and adopted in the automotive industry to ensure the cleanliness and quality of components used in vehicles. These standards are designed to ensure that components and systems used in various applications meet specific cleanliness requirements.What is particle cleanliness ?Particle cleanliness refers to the absence or control of particles, contaminants, and impurities in a specific environment, component, or system. In various industries, including automotive, aerospace, electronics, and manufacturing, particle cleanliness is a critical factor that directly impacts the performance, reliability, and safety of products and processes.Why is particle cleanliness essential ?Cleanliness is crucial in many industries, especially in automotive and aerospace, where even tiny particles or contaminants can adversely affect the performance and reliability of components, leading to potential failures. Particle cleanliness plays an important role in automotive applications to maintain the proper functioning and reliability of various components and systems.Particle cleanliness is pivotal in the automotive industry to ensure optimal performance, safety, and durability of components and systems. By monitoring and controlling particle contamination, automotive manufacturers can improve product quality, reduce warranty claims, enhance customer satisfaction, and contribute to a more efficient and environmentally friendly automotive sector.Why choose us?Spring Lake is a professional fastener manufacturer specializing in export sales, and also has rich experience in international trade and fastener production expertise for more than 4 decades. We already have experience delivering special automotive parts to Nexteers Automotive and cleaned automotive components to BorgWarner through our valued partners, and directly supply cleaned automotive forging fasteners to Bossard Group.
Production Capability
Cold heading

The process of gradually making a wire into a specified shape at high speed without heating, using a series of dies, and punches. Suitable to produce simple products with varied drives and head types, like pan head, flat head, socket head, bugle head, and truss head…etc. while maintaining higher precision and concentricity. 

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Multi-station forming

When parts become more complex, sophisticated and challenging to manufacture, multi-station formers are particularly versatile in creating complicated parts, and possess the advantage of fully completing parts in one manufacturing process at a reasonable cost.

Customized design is available upon request.

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Knurling formation

Knurling is a cold-forming process used to create textured patterns (usually diamond or straight-line) on a workpiece’s surface for improved grip and handling. It is performed using hardened knurling dies that press into the rotating workpiece, displacing material rather than cutting it away

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CNC Manufacturing

Knurling is a cold-forming process used to create textured patterns (usually diamond or straight-line) on a workpiece’s surface for improved grip and handling. It is performed using hardened knurling dies that press into the rotating workpiece, displacing material rather than cutting it away

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SEMS Washer Assembly
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Thread Rolling
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Flow to Success

We deliver customized solutions to meet industry needs through our expertise in engineering, design, and in-house production process.