When Nyloc Lock Nuts are required in A2 Stainless Steel, the alternative grades and the trade-offs between them matter as much as the dimensions. This page covers both, plus mechanical and corrosion data.
Why Choose A2 Stainless Steel for Nyloc Lock Nuts
The most common stainless grade for indoor and general outdoor fasteners. For nyloc lock nuts, 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 Nyloc Lock Nuts 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 Nyloc Lock Nuts, 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 Nyloc Lock Nuts Available in A2 Stainless Steel
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e min (mm) | Total height m (mm) | Metal height (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 6.01 | 4.0 | 2.4 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M4 | 0.7 | 7.0 | 7.66 | 5.0 | 3.2 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M5 | 0.8 | 8.0 | 8.79 | 5.0 | 3.7 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M6 | 1.0 | 10.0 | 11.05 | 6.0 | 4.7 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M8 | 1.25 | 13.0 | 14.38 | 8.0 | 6.14 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M10 | 1.5 | 16.0 | 17.77 | 10.0 | 8.04 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M12 | 1.75 | 18.0 | 20.03 | 12.0 | 9.64 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M14 | 2.0 | 21.0 | 23.36 | 14.0 | 11.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M16 | 2.0 | 24.0 | 26.75 | 16.0 | 13.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M20 | 2.5 | 30.0 | 32.95 | 20.0 | 16.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M24 | 3.0 | 36.0 | 39.55 | 22.0 | 19.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M30 | 3.5 | 46.0 | 50.85 | 25.0 | 24.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M36 | 4.0 | 55.0 | 60.79 | 29.0 | 29.0 | DIN 985 / ISO 7040 | With nylon insert, single use |