Material specification page for wing nut in A2 Stainless Steel. Covers the grade designation (A2-70 (304)), corrosion and magnetic behavior, comparable grades and their trade-offs, and the sizes available to GB/T 62 / DIN 315.
Why Choose A2 Stainless Steel for Wing Nut — GB/T 62 / DIN 315 (Series 077)
The most common stainless grade for indoor and general outdoor fasteners. For wing nut — gb/t 62 / din 315 (series 077), this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A2-70 (304) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Good general corrosion resistance |
Corrosion Behavior in Service
A2 (304) gives excellent atmospheric and most-water corrosion resistance and is the most common stainless for Wing Nut — GB/T 62 / DIN 315 (Series 077) in indoor and general outdoor service. In chloride-bearing environments (marine air, road salt, swimming pools) consider stepping up to A4 (316).
Comparable Grades
For Wing Nut — GB/T 62 / DIN 315 (Series 077), the alternative stainless grade is A4 (316). A2 (304) suits general indoor and outdoor service; A4 (316) adds molybdenum for marine and chloride environments. Where higher strength matters more than corrosion, switch to plated alloy-steel class 8.8 or 10.9.
Sizes of Wing Nut — GB/T 62 / DIN 315 (Series 077) Available in A2 Stainless Steel
| Size | Pitch (mm) | Wing width A (mm) | Wing height h (mm) | Nut height m (mm) | Reference standard |
|---|---|---|---|---|---|
| M3 | 0.5 | 12 | 8 | 5 | GB/T 62 / DIN 315 |
| M4 | 0.7 | 16 | 10 | 7 | GB/T 62 / DIN 315 |
| M5 | 0.8 | 20 | 12 | 8 | GB/T 62 / DIN 315 |
| M6 | 1.0 | 24 | 14 | 10 | GB/T 62 / DIN 315 |
| M8 | 1.25 | 32 | 18 | 13 | GB/T 62 / DIN 315 |
| M10 | 1.5 | 40 | 22 | 16 | GB/T 62 / DIN 315 |
| M12 | 1.75 | 48 | 26 | 19 | GB/T 62 / DIN 315 |
| M16 | 2.0 | 60 | 32 | 24 | GB/T 62 / DIN 315 |