| Material |
| C/S = Carbon Steel 304 SS = Type 304 Stainless Steel 316 SS = Type 316 Stainless Steel 420 SS = Type 420 Stainless Steel PHO = Phosphor Bronze KM = K-Monel |
| Finish |
| PLN = Plain CD1 = Cadmium & Clear Dichromate CD2 = Cadmium & Yellow Dichromate CD3 = Cadmium & Black Chromate MZ1= Mechanical Zinc & Clear Dichromate MZ2= Mechanical Zinc & Yellow Dichromate ZN1 = Zinc & Clear Dichromate ZN2 = Zinc & Yellow Dichromate BKO = Black Oxide PHO = Phosphate HDG = Hot Dip Galvanized MG = Mechanical Galvanized |
DIN 127B
| Nominal Washer Size |
Inside Diameter A Min. |
Inside Diameter A Max. |
Outside Diameter B |
Width C |
Thickness D |
WCL Product Number |
|---|---|---|---|---|---|---|
| M3 | 3.1 | 3.4 | 6.2 | 1.2 | 0.7 | M3 DIN 127B |
| M4 | 4.1 | 4.4 | 7.6 | 1.4 | 0.8 | M4 DIN 127B |
| M5 | 5.1 | 5.4 | 9.2 | 1.7 | 1.1 | M5 DIN 127B |
| M6 | 6.1 | 6.5 | 11.8 | 2.35 | 1.5 | M6 DIN 127B |
| M7 | 7.1 | 7.5 | 12.8 | 2.35 | 1.5 | M7 DIN 127B |
| M8 | 8.1 | 8.5 | 14.8 | 2.85 | 1.9 | M8 DIN 127B |
| M10 | 10.2 | 10.7 | 18.1 | 3.3 | 2.05 | M10 DIN 127B |
| M12 | 12.2 | 12.7 | 21.1 | 3.8 | 2.35 | M12 DIN 127B |
| M14 | 14.2 | 14.7 | 24.1 | 4.3 | 2.85 | M14 DIN 127B |
| M16 | 16.2 | 17 | 27.4 | 4.8 | 3.3 | M16 DIN 127B |
| M18 | 18.2 | 19 | 29.4 | 4.8 | 3.3 | M18 DIN 127B |
| M20 | 20.2 | 21.2 | 33.6 | 5.8 | 3.8 | M20 DIN 127B |
| M22 | 22.5 | 23.5 | 35.9 | 5.8 | 3.8 | M22 DIN 127B |
| M24 | 24.5 | 25.5 | 40 | 6.75 | 4.8 | M24 DIN 127B |
| M30 | 30.5 | 31.7 | 48.2 | 7.75 | 5.8 | M30 DIN 127B |
Square Section DIN 7980
| Nominal Washer Size |
Inside Diameter A Min. |
Inside Diameter A Max. |
Outside Diameter B |
Width C |
Thickness D |
WCL Product Number |
|---|---|---|---|---|---|---|
| M6 | 6.1 | 6.5 | 9.7 | 1.4 | 1.4 | M6 DIN 7980 |
| M8 | 8.2 | 8.6 | 12.8 | 1.9 | 1.9 | M8 DIN 7980 |
| M10 | 10.2 | 10.8 | 16.1 | 2.35 | 2.35 | M10 DIN 7980 |
| M12 | 12.2 | 13 | 18.3 | 2.35 | 2.35 | M12 DIN 7980 |
| M14 | 14.2 | 15 | 21.4 | 2.8 | 2.8 | M14 DIN 7980 |
| M16 | 16.2 | 17.2 | 24.6 | 3.3 | 3.3 | M16 DIN 7980 |
| M18 | 18.2 | 19.2 | 26.6 | 3.3 | 3.3 | M18 DIN 7980 |
| M20 | 20.2 | 21.2 | 30.6 | 4.3 | 4.3 | M20 DIN 7980 |
| M22 | 22.5 | 23.5 | 32.9 | 4.3 | 4.3 | M22 DIN 7980 |
| M24 | 24.5 | 25.5 | 35.9 | 4.8 | 4.8 | M24 DIN 7980 |
| M30 | 30.5 | 31.8 | 44.2 | 5.8 | 5.8 | M30 DIN 7980 |
Regular Section ASME B18.21.2M-1994
| Nominal Washer Size |
Inside Diameter A Min. |
Inside Diameter A Max. |
Outside Diameter B |
Width C |
Thickness D |
WCL Product Number |
|---|---|---|---|---|---|---|
| M2.5 | 2.55 | 2.7 | 4.94 | 1.02 | 0.64 | M2.5 R |
| M3 | 3.06 | 3.21 | 5.83 | 1.19 | 0.79 | M3 R |
| M3.5 | 3.58 | 3.76 | 6.35 | 1.19 | 0.79 | M3.5 R |
| M4 | 4.08 | 4.26 | 7.28 | 1.4 | 1.02 | M4 R |
| M5 | 5.08 | 5.26 | 8.66 | 1.57 | 1.19 | M5 R |
| M6 | 6.1 | 6.29 | 12.08 | 2.77 | 1.57 | M6 R |
| M8 | 8.13 | 8.36 | 14.96 | 3.18 | 1.98 | M8 R |
| M10 | 10.13 | 10.38 | 17.83 | 3.58 | 2.39 | M10 R |
| M12 | 12.15 | 12.45 | 21.47 | 4.34 | 3.18 | M12 R |
| M14 | 14.2 | 14.5 | 24.39 | 4.78 | 3.58 | M14 R |
| M16 | 16.25 | 16.63 | 27.53 | 5.16 | 3.96 | M16 R |
| M20 | 20.28 | 20.66 | 33.26 | 5.94 | 4.78 | M20 R |
| M24 | 24.3 | 24.81 | 39.79 | 7.14 | 5.94 | M24 R |
| M30 | 30.51 | 31.25 | 49.36 | 8.74 | 7.54 | M30 R |
| M36 | 36.61 | 37.5 | 58.76 | 10.31 | 9.12 | M36 R |
Heavy Section ASME B18.21.2M-1994
| Nominal Washer Size |
Inside Diameter A Min. |
Inside Diameter A Max. |
Outside Diameter B |
Width C |
Thickness D |
WCL Product Number |
|---|---|---|---|---|---|---|
| M2.5 | 2.55 | 2.7 | 5.29 | 1.19 | 0.79 | M2.5 HVY |
| M3 | 3.06 | 3.21 | 6.24 | 1.4 | 1.02 | M3 HVY |
| M3.5 | 3.58 | 3.76 | 6.76 | 1.4 | 1.02 | M3.5 HVY |
| M4 | 4.08 | 4.26 | 7.64 | 1.57 | 1.19 | M4 HVY |
| M5 | 5.08 | 5.26 | 9.07 | 1.78 | 1.42 | M5 HVY |
| M6 | 6.1 | 6.29 | 12.12 | 2.79 | 1.96 | M6 HVY |
| M8 | 8.13 | 8.36 | 15.22 | 3.3 | 2.46 | M8 HVY |
| M10 | 10.13 | 10.38 | 18.03 | 3.68 | 2.92 | M10 HVY |
| M12 | 12.15 | 12.45 | 21.73 | 4.47 | 3.84 | M12 HVY |
| M14 | 14.2 | 14.5 | 24.64 | 4.9 | 4.32 | M14 HVY |
| M16 | 16.25 | 16.63 | 27.88 | 5.33 | 4.8 | M16 HVY |
| M20 | 20.28 | 20.66 | 33.77 | 6.2 | 5.74 | M20 HVY |
| M24 | 24.3 | 24.81 | 40.66 | 7.57 | 7.21 | M24 HVY |
| M30 | 30.51 | 31.24 | 50.81 | 9.47 | 9.25 | M30 HVY |
| M36 | 36.61 | 37.5 | 60.6 | 11.23 | 11.18 | M36 HVY |