ISO 7380-2 Flanged Socket Button Head Screws
We supply ISO 7380-2 flanged socket button head screws in high tensile grade 10.9 self colour and A2 stainless steel, from M3 to M12. The integral flange spreads the clamping load over slots, thin sheet and soft materials without a separate washer.
Also known as: flange button, flanged button head, button flange screw, flanged dome socket.
ISO 7380-2 dimensions
| Diameter | Pitch | Flange diameter | Head depth | Key size | Full thread up to |
|---|---|---|---|---|---|
| M3 | 0.5mm | 6.9mm | 1.65mm | 2mm | 12mm |
| M4 | 0.7mm | 9.4mm | 2.2mm | 2.5mm | 16mm |
| M5 | 0.8mm | 11.8mm | 2.75mm | 3mm | 30mm |
| M6 | 1.0mm | 13.6mm | 3.3mm | 4mm | 30mm |
| M8 | 1.25mm | 17.8mm | 4.4mm | 5mm | 40mm |
| M10 | 1.5mm | 21.9mm | 5.5mm | 6mm | 40mm |
| M12 | 1.75mm | 24.0mm | 6.6mm | 8mm | 50mm |
Which standard covers flanged button head screws?
We supply them to ISO 7380-2, the flanged part of the ISO 7380 button head standard. Older catalogues and drawings sometimes list flanged buttons under plain ISO 7380 - check the head style and dimensions against the table to confirm which part is intended.
What is the difference between ISO 7380-2 and ISO 7380-1?
Both share the same low domed head; ISO 7380-2 adds a wider integral flange beneath it, increasing the bearing surface at each size over the plain ISO 7380-1 button.
Why choose a flanged button head?
The flange acts as a built-in washer, spreading load over slotted holes, thin sheet and soft or brittle materials, and speeding assembly where separate washers would otherwise be fitted.
Need ISO 7380-2 in a non-standard size or material?
Send us your drawing — specials quoted within 24 hours.