Description
ISO 4762 Socket Head Cap Screw M5x20-A4 — BOLTON SKU 56554.
About the ISO 4762 Socket Head Cap Screw M5x20-A4
This item is an M5 x 20 mm hexagon socket head cap screw in A4 stainless steel, dimensioned to ISO 4762 (dimensionally equivalent to DIN 912). The ISO 4762 Socket Head Cap Screw pattern pairs a cylindrical head with an internal hexagon drive, so the head can sit inside a counterbore and the screw can be tightened where there is no room for a spanner. This M5 variant has a 0.8 mm coarse thread pitch, a maximum head diameter of 8.5 mm, a head height of 5 mm and is driven by a 4 mm hex key. The 20 mm nominal length suits thicker clamped stacks or deeper tapped engagement than the shorter M5 lengths BOLTON lists alongside it. A4 (316-type) austenitic stainless steel gives molybdenum-enhanced resistance to pitting in chloride and marine-influenced environments.
Key specifications
| Standard | ISO 4762 (equivalent to DIN 912) |
|---|---|
| Thread size | M5, coarse pitch 0.8 mm |
| Nominal length | 20 mm |
| Head diameter | 8.5 mm max |
| Head height | 5 mm |
| Drive | 4 mm internal hexagon |
| Material | A4 austenitic stainless steel (316 type, ISO 3506 family) |
Typical applications
The 20 mm length of this M5 cap screw is commonly chosen for clamping thicker plates, spacers or housings while retaining several diameters of thread engagement. Counterbored socket-head joints of this type appear throughout machine building, enclosures and instrumentation, and the A4 grade extends that use into corrosive or washdown conditions.
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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