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DIN 965 / ISO 7046
a) DIN 965 specifies the standard for countersunk head screws with a cross recess drive (commonly known as a Phillips drive). These screws are designed to sit flush with the material’s surface when installed, ensuring a smooth and clean appearance.
b) The cross-recessed drives, such as Phillips and Pozi, are widely used for their ease of installation and removal with compatible screwdrivers. Additionally, the hexalobular socket (6-lobe) design is commonly employed to provide improved torque transfer and minimize the risk of cam-out during fastening.
| Description | |
|---|---|
| Material | Stainless steel / Carbon steel class |
| Driving recess type | Cross recess type H (Phillips) & Hexalobular socket (6 lobe) |
| Head Type | Countersunk head |
| Thread Type | Thread rolling screw |
| Surface color | Clean finish / Zinc finish |
| Thread size / diameter | M3 to M20 |
| Type of end | Flat end |
| Field of application | Automotive / Construction / Machinery / Industrial equipment |
| Drive variations | Hexalobular socket drive (6 lobe), cross recess type Z (pozidrive) |
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ISO 7380-2
a) ISO 7380-2 specifies the standard for hexagon socket button head screws with collar. Generic hexalobular socket (6 lobe) is another common alternative used in various applications.
b) This screw features an extended cylindrical tip, known as a dog point, at the end of the threaded portion, enabling precise alignment and positioning in mating components.
DIN 968
a) DIN 968 specifies the standard for cross-recessed pan head tapping screws with a collar. The screws are commonly available with two types of cross recess drives: Type H (Phillips) and Type Z (Pozidriv), both designed for easy installation and removal.
b) There are two types of thread ends specified in DIN 7970 (Tapping Screws): Type C, which features a cone point, and Type F, which has a flat end.
DIN 6921
Similar to (DIN 6922), these bolts also have a flange (a disc-shaped extension) beneath the head, which acts as an integrated washer. The flange provides a larger bearing surface and aids in distributing the load, making these bolts suitable for various applications. It's worth noting that it is common for these parts to feature serrations under the head, further enhancing their functionality.
Slot truss head track bolt
a) A ribbed neck screw is a type of fastener designed with a special feature on its shank or neck. Instead of a smooth or threaded surface, the neck of the screw has ribbed, serrated, or knurled features. These ribs or serrations provide additional grip and resistance when the screw is driven into a material, preventing it from rotating or loosening.