Product Description
M12 Grade 10.9 Zinc Plated Socket Button Head Screws – ISO 7380
M12 socket button head screws manufactured from Grade 10.9 high tensile steel with a zinc plated finish. The rounded button head provides a neat, low-profile appearance, while the internal hexagon socket accepts an 8mm Allen key.
Featuring a standard M12 x 1.75mm metric coarse thread, these screws are suitable for machinery, equipment assembly, maintenance and repair work using matching nuts or tapped holes.
Technical Specifications
| Thread size | M12 |
|---|---|
| Thread pitch | 1.75mm – metric coarse |
| Thread direction | Right hand |
| Material | High tensile steel |
| Property class | 10.9 |
| Finish | Zinc plated |
| Head style | Button head, without flange |
| Dimensional standard | ISO 7380-1 |
| Drive type | Internal hexagon socket |
| Allen key size | 8mm |
| Head diameter | 20.48–21.00mm |
| Head height | 6.24–6.60mm |
| Minimum socket engagement depth | 4.16mm |
| Length measurement | From beneath the head to the end of the screw |
Available Lengths
20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm and 75mm.
Thread coverage may vary with length. Where a fully threaded screw or a specific unthreaded shank length is essential, check the selected variant before ordering.
Key Features
- Grade 10.9 high tensile steel construction.
- Zinc plated finish for corrosion protection.
- Rounded button head for a neat, compact assembly.
- 8mm internal hexagon drive.
- Standard M12 x 1.75mm thread for matching metric nuts and tapped holes.
Selection and Installation
Select the length to suit the assembly thickness and required thread engagement. Use a correctly fitting 8mm Allen key, fully seated in the socket.
Button head screws have reduced loadability because of their head geometry. Tightening torque and permissible loads must suit the button head design; do not apply standard socket cap screw torque values automatically.
Pack Quantities
Available in quantities of 1, 5, 10, 20, 50, 100, 250, 500 and 1,000. Select the required length and quantity from the options.
Standards and References
- ISO 7380-1 – hexagon socket button head screw dimensions.
- ISO 898-1 – steel fastener property class reference, subject to the reduced loadability of the button head design.
- ISO 261 – metric screw thread pitch reference.
