Questions & Answers
Stainless steel washers grades
Ferritic steels: AISI 439, AISI 409, AISI 430.
Austenitic steels: AISI 310, AISI 321, AISI 316, AISI 304.
Stainless steel washers standards
GOST standards:
GOST 10450-78;
GOST 6402-70;
GOST 6958-78;
GOST 11371-78.
International standards:
ISO 10673;
ISO 7093-2;
ISO 7093-1;
ISO 7091;
ISO 7090;
ISO 7089.
Stainless steel washers weight table
| Thread | Inner Ø, mm | Outer Ø, mm | Thickness, mm | Weight of 1 piece, g | Pieces in 1 kg |
| M3 | 3.2 | 7 | 0.5 | 0.1 | ~10000 |
| M4 | 4.3 | 9 | 0.8 | 0.25 | ~4000 |
| M5 | 5.3 | 10 | 1.0 | 0.4 | ~2500 |
| M6 | 6.4 | 12 | 1.6 | 0.8 | ~1250 |
| M8 | 8.4 | 16 | 1,6 | 1.7 | ~590 |
| M10 | 10.5 | 20 | 2,0 | 3,5 | ~285 |
| M12 | 13 | 24 | 2.5 | 6.0 | ~167 |
| M14 | 15 | 28 | 2.5 | 9.0 | ~110 |
| M16 | 17 | 30 | 3,0 | 11.5 | ~87 |
| M18 | 19 | 34 | 3,0 | 15 | ~67 |
| M20 | 21 | 37 | 3.0 | 19 | ~53 |
| M22 | 23 | 39 | 3.0 | 22 | ~45 |
| M24 | 25 | 44 | 4.0 | 32 | ~31 |