Industrial Fastener · Stainless Steel Series
Stainless Socket Cap Screw
Stainless socket cap screws (Allen bolts) to DIN 912 / ISO 4762 in austenitic stainless. A2-70 for general use; A4-70 for chloride and marine. Note: A2-70 / A4-70 indicate strength tier; the maximum strength stainless can achieve via cold work, generally lower than carbon steel Class 12.9.
Product Overview
Stainless Socket Cap Screw sourcing essentials
Stainless socket cap screws (Allen bolts) to DIN 912 / ISO 4762 in austenitic stainless. A2-70 for general use; A4-70 for chloride and marine. Note: A2-70 / A4-70 indicate strength tier; the maximum strength stainless can achieve via cold work, generally lower than carbon steel Class 12.9.
DIN 912, ISO 4762
A2-70 (304), A4-70 (316), A4-80 (highest stainless tier)
Stainless socket cap screws (Allen bolts) to DIN 912 / ISO 4762 in austenitic stainless. A2-70 for general use; A4-70 for chloride and marine....
Inspection records, lot labels, certificate options, and destination-ready packing.
Technical Data
Specification range
Final dimensions, mechanical properties, finish, and packing are confirmed against the RFQ and applicable standard.
| Standards | DIN 912, ISO 4762 |
|---|---|
| Stainless Grade | A2-70 (304), A4-70 (316), A4-80 (highest stainless tier) |
| Size Range | M2 – M24 |
Common surface finishes
Select an option to review its sourcing note. Exact coating system, thickness, and corrosion requirement are confirmed with the order.
Quality Control
Checked before consolidation and export
Each order is matched to the specified standard and verified at practical control points before shipment.
RFQ confirmation
Standard, size, grade, pitch, finish, certificates, packing, and destination are locked before production.
Lot verification
Critical dimensions, thread fit, markings, finish appearance, and packing labels are sampled and recorded.
Shipment approval
Photos and required reports are organized before consolidated loading and export documentation.
Buyer Questions
Frequently asked questions
Can a stainless socket cap screw match Class 12.9 strength?
No. Austenitic stainless, even cold-worked to A4-80, has lower tensile strength than Class 12.9 carbon alloy steel. If both high strength and corrosion resistance are required, use a high-end carbon steel screw with a corrosion-protective coating (Geomet, Dacromet) or specify a duplex or precipitation-hardened stainless (which is much more expensive).
Ready to quote Stainless Socket Cap Screw?
Send the standard, size, grade, finish, quantity, packing requirement, and destination. Availability and lead time are confirmed with the inquiry.