Wing Nut M4 316 Stainless 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
| Material | 316 Stainless Steel |
| Grade | A4-70 |
| Diameter | M4 |
| Thread | Coarse Thread |
| Surface Finish | Plain |
| Brand | SFX Fasteners |
Ordering & shipping
| Minimum order | No minimum — single pieces welcome |
| Pricing | Order totals are confirmed at checkout, before payment |
| 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.
About this nut
This is a nut in 316 Stainless Steel, at strength class A4-70, supplied plain, with an M4 thread. Every dimension is stated against the standard named above; where a tolerance class matters to your design, ask us and we will confirm it in writing before you order.
A nut is the closing half of a bolted joint. Its property class is chosen to match the bolt it is paired with — a class 8 nut for a grade 8.8 bolt, so the thread strips before the bolt breaks. Used wherever a bolt or stud has to be tightened from the far side, and for locking and positioning duties on machinery and steelwork.
A4-70 is 316 stainless at 700 MPa minimum tensile — the standard grade for stainless fasteners that meet chlorides, marine air or food plant.
316 (EN 1.4401, A4) adds 2–3% molybdenum, which is what stops pitting in chloride environments. Specify it for marine air, coastal sites, swimming pools, salt spray, chemical plant and food processing.
This line ships worldwide from our own warehouse. Express courier, air parcel and postal services are all offered at checkout, with a tracking number e-mailed as soon as the parcel is handed over.

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