For Tab Lock Washer for Round Nut — GB/T 858 (Series 089) in A2 Stainless Steel, the controlling decisions are corrosion, strength and service temperature. This guide summarizes those three for A2 Stainless Steel Tab Lock Washer for Round Nut — GB/T 858 (Series 089) and lists every size we supply.
Why Choose A2 Stainless Steel for Tab Lock Washer for Round Nut — GB/T 858 (Series 089)
The most common stainless grade for indoor and general outdoor fasteners. For tab lock washer for round nut — gb/t 858 (series 089), 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 |
Galvanic & Galling Considerations
Two important notes for stainless tab lock washer for round nut — gb/t 858 (series 089): (1) stainless can gall on stainless threads under load — use a thread lubricant or anti-galling compound, especially for M6 and below; (2) when joined to aluminum or galvanized steel, stainless can drive galvanic corrosion of the less-noble metal in wet service — isolate with a coating or sleeve where appropriate.
Comparable Grades
For Tab Lock Washer for Round Nut — GB/T 858 (Series 089), 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 Tab Lock Washer for Round Nut — GB/T 858 (Series 089) Available in A2 Stainless Steel
| For shaft / nut size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Thickness t (mm) | Tab length (mm) | Reference standard |
|---|---|---|---|---|---|
| M10 | 10.5 | 21 | 1.0 | 8 | GB/T 858 |
| M12 | 12.5 | 25 | 1.0 | 9 | GB/T 858 |
| M16 | 16.5 | 30 | 1.0 | 10 | GB/T 858 |
| M20 | 20.5 | 38 | 1.5 | 12 | GB/T 858 |
| M24 | 24.5 | 45 | 1.5 | 14 | GB/T 858 |
| M30 | 30.5 | 55 | 1.5 | 16 | GB/T 858 |
| M36 | 36.5 | 65 | 2.0 | 18 | GB/T 858 |
| M48 | 48.5 | 85 | 2.0 | 20 | GB/T 858 |
| M60 | 60.5 | 105 | 2.5 | 24 | GB/T 858 |