Description
Hex Cap Head Screw M3x10 SST A4 DIN 912 — BOLTON SKU 57576.
About the Hex Cap Head Screw M3x10 SST
DIN 912 is the long-standing designation for the hexagon socket head cap screw, superseded in current use by ISO 4762 with the same head geometry. This size is M3 x 10 mm in A4 stainless steel. For M3 the standard gives a maximum head diameter of 5.50 mm and a maximum head height of 3.00 mm, driven by a 2.5 mm hexagon key; the M3 coarse thread pitch is 0.5 mm. A4 is the molybdenum-bearing austenitic stainless grade, chosen over A2 where the fastener is exposed to chlorides, salt spray, coastal atmosphere or wash-down chemicals. At 10 mm long with a 3 mm shank this is a small fixing, so the drive socket is the limiting feature — a worn or undersized key will round the socket before the thread is properly tightened.
Key specifications
| Standard | DIN 912 (equivalent ISO 4762) |
|---|---|
| Thread | M3, 0.5 mm pitch |
| Length | 10 mm |
| Material | A4 austenitic stainless steel |
| Head diameter | 5.50 mm max |
| Head height | 3.00 mm max |
| Drive | 2.5 mm hexagon socket |
Typical applications
A 10 mm M3 screw is a short fixing for thin plate, printed-circuit standoffs, small brackets, sensor mounts and instrument covers where the total grip is only a few millimetres. Specifying A4 rather than A2 at this size is usually driven by the environment rather than by load: coastal and marine installations, outdoor enclosures and equipment subject to salt-laden air or regular chemical cleaning. The small cylindrical head fits neatly into shallow counterbores on machined or moulded parts.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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