Material specification page for t-slot nuts in A4 Stainless Steel. Covers the grade designation (A4-80 (316)), corrosion and magnetic behavior, comparable grades and their trade-offs, and the sizes available to DIN 508.
Why Choose A4 Stainless Steel for T-Slot Nuts
Specified for marine, coastal and chemical applications. For t-slot nuts, this matters when superior, including marine and chloride environments is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A4-80 (316) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Superior, including marine and chloride environments |
Corrosion Behavior in Service
A4 (316) adds 2–3% molybdenum to the A2 (304) composition, which dramatically improves resistance to chloride-pitting corrosion. For T-Slot Nuts in marine, coastal, swimming-pool or food-processing environments, A4 is the default selection.
Comparable Grades
For T-Slot Nuts, the alternative stainless grade is A2 (304). 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 T-Slot Nuts Available in A4 Stainless Steel
| Thread size | T-slot width (mm) | Nut width b (mm) | Total height h (mm) | Key height h1 (mm) | Hook width e (mm) | Reference standard |
|---|---|---|---|---|---|---|
| M5 | 6 | 8.0 | 8.0 | 4.5 | 6.4 | DIN 508 / GN505 |
| M6 | 8 | 10.0 | 10.0 | 5.5 | 8.4 | DIN 508 / GN505 |
| M8 | 10 | 12.0 | 12.0 | 7.0 | 10.4 | DIN 508 / GN505 |
| M8 | 12 | 14.0 | 12.0 | 7.0 | 12.4 | DIN 508 / GN505 |
| M10 | 12 | 14.0 | 14.0 | 8.0 | 12.4 | DIN 508 / GN505 |
| M10 | 14 | 16.0 | 14.0 | 8.0 | 14.4 | DIN 508 / GN505 |
| M12 | 14 | 16.0 | 17.0 | 10.0 | 14.4 | DIN 508 / GN505 |
| M12 | 18 | 20.0 | 17.0 | 10.0 | 18.4 | DIN 508 / GN505 |
| M16 | 18 | 20.0 | 20.0 | 12.0 | 18.4 | DIN 508 / GN505 |
| M16 | 22 | 25.0 | 20.0 | 12.0 | 22.4 | DIN 508 / GN505 |
| M20 | 22 | 25.0 | 25.0 | 15.0 | 22.4 | DIN 508 / GN505 |
| M20 | 28 | 32.0 | 25.0 | 15.0 | 28.4 | DIN 508 / GN505 |
| M24 | 28 | 32.0 | 30.0 | 18.0 | 28.4 | DIN 508 / GN505 |