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DIN 7985 / ISO 7045 / ISO 14583
a) It is a standard that defines the specifications for cross recessed raised cheese head screws (Pan Head). These screws have a raised cylindrical head with a flat bearing surface and a cross recess, often referred to as a Phillips drive (Type H). Some other common types are cross recess type Z (Pozi) and Generic hexalobular socket / 6 lobe.
| Description | |
|---|---|
| Material | Stainless steel / Carbon steel |
| Driving recess type | Hexalobular socket drive (6 lobe) |
| Head Type | Cross recessed raised cheese head (pan head) |
| Thread Type | Machine screw thread |
| Surface color | Zinc finish / Phosphate / Black oxide |
| Type of thread locking patch | Nylon thread locking patch blue |
| Type of end | Flat end |
| Field of application | Automotive / Machinery |
| Drive variations | Cross recess type H (Phillips) & type Z (Pozidrive) |
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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.
Hex socket big truss head screws with extremely short length
Serretions under head / Extremely short length
Big flat head machine screws
Extremely low head
Tiny screw M2.5
Type H or type Z available upon request
Pan head trilobular thread rolling screw DIN 7500
a) DIN 7500 specifies self-tapping screws for metal, also known as thread-forming screws. These screws are designed to form or cut threads in a pre-drilled hole in metal materials, without requiring a pre-cut thread.
b) The screw shank has a three-lobe shape instead of a round cross-section, which reduces friction during installation, and facilitates smooth material displacement and efficient thread formation.
c) The long dog point (the extended, unthreaded tip of the screw) acts as a pilot, helping to align the screw with the pre-drilled hole during installation, and faciliates smooth installation.
d) A standard trilobe thread forming screw without dog point is avaialble upon request.
Hexalobular socket pan head screw
a) The screw head features a hexalobular socket, often referred to by the generic name “6 lobe”
b) The flat underside of the pan head distributes clamping force over a larger area compared to countersunk or round head screws.
c) Although there may be minor differences in dimensional tolerances or thread requirements, both DIN 7985 (German standard) and ISO 14583 (international standard) specify pan head screws.