Description
1033085 SCREW, CAP HEX SKT HD M3X20 LG SS A4 — BOLTON SKU 59031.
About the 1033085 Hex Socket Cap Screw, M3x20 A4
Article 1033085 is a hexagon socket head cap screw in the M3 x 20 mm size, listed against the DIN 912 standard and the Bossard BN 612 stainless range, with a coarse M3 thread of 0.5 mm pitch and a 2.5 mm hexagon key drive. DIN 912 has been functionally replaced by ISO 4762 and the dimensional tables for head diameter, head height and socket size are common to both, so the two callouts are treated as interchangeable. A4 stainless steel is the molybdenum-bearing austenitic grade defined in ISO 3506, specified where corrosion resistance is the governing requirement. The compact cylindrical head allows the screw to be recessed into a counterbore, and the internal hexagon drive gives access in tight assemblies where a wrench cannot be swung around an external head, which is why this head form dominates small-equipment and instrument construction.
Key specifications
| Manufacturer part number | 1033085 |
|---|---|
| Thread | M3, 0.5 mm pitch |
| Nominal length | 20 mm |
| Head form | Hexagon socket head cap (cylindrical / cheese head) |
| Drive | 2.5 mm hexagon key |
| Standard | DIN 912 / ISO 4762 |
| Material | A4 stainless steel |
| Catalogue reference | Bossard BN 612 |
Typical applications
M3 stainless socket head cap screws are used for instrument and enclosure assembly, mounting small brackets, sensors and electronic sub-assemblies, and as replacement hardware in MRO work. The A4 grade suits humid, coastal and washdown environments and outdoor ground equipment.
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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