Description
M3 x 55 mm Socket Head Cap Screw, DIN 912 / ISO 4762, Stainless Steel A2 — BOLTON SKU 70194.
About the SSC-M3-55-A2 Cap Screw M3 x 55 mm
The reference resolves as a stainless socket cap screw, M3 thread, 55 mm long, in A2 material. It is made to DIN 912 / ISO 4762, the product-grade-A standard for hexagon socket head cap screws, which for the M3 size fixes a head diameter of 5.50 mm maximum, a head height of 3.00 mm maximum and a 2.5 mm hexagon socket on an M3 x 0.5 coarse thread. At 55 mm this is an unusually long screw for its diameter — a slenderness that matters in practice, because a long M3 shank is easy to over-torque and will buckle or gall before a shorter screw of the same class would. A2 is the standard 18/8 austenitic stainless grade, non-magnetic and corrosion resistant, and is typically supplied at property class 70.
Key specifications
| Attribute | Value |
|---|---|
| Part reference | SSC-M3-55-A2 |
| Standard | DIN 912 / ISO 4762, product grade A |
| Head form | Hexagon socket cylindrical head |
| Thread | M3 x 0.5 |
| Nominal length | 55 mm |
| Head diameter (max) | 5.50 mm |
| Head height (max) | 3.00 mm |
| Hexagon socket | 2.5 mm |
| Material | Stainless steel A2 |
Typical applications
A 55 mm M3 is a through-bolting screw: it passes through stacked PCBs and standoff columns, deep heatsink and fan assemblies, layered enclosure walls, and spacer stacks in optical or sensor mounts, reaching a tapped boss or a nut at the far end. The stainless grade suits outdoor, marine and wash-down installations, and its non-magnetic behaviour is useful in instrument bays near compasses and magnetometers.
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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