ISO 7380 Button Head Socket Screw M3x15 10B21 Carbon Steel — stocked and shipped worldwide by SFX Fasteners. Available for single-piece retail orders — no minimum order — dispatched from our own warehouse within 24–48 hours.
Specifications
| Standard | ISO 7380 |
| Material | 10B21 Carbon Steel |
| Grade | Grade 10.9 |
| Diameter | M3 |
| Length | 15 mm |
| Thread | Full Thread |
| Surface Finish | Black Oxide (Hardened) |
| Brand | SFX Fasteners |
Manufactured to ISO 7380. Dimensions meet the published standard; tolerances per the standard’s normal grade unless stated otherwise. Full dimension table available on request.
Ordering & shipping
| Minimum order | No minimum — single pieces welcome |
| Volume discount | Applied automatically to the whole order as the cart value rises, from 5% |
| Custom & dropship | Small batches to drawing · blind dropshipping on request |
| Dispatch | 24–48 hours for stock items |
| Shipping | Worldwide, calculated at checkout by weight and destination |
Need a specific size, grade or standard? Send us a quote request — we quote to drawing and to DIN / ANSI / GB / JIS standards.

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