TOBO GROUP LTD
TOBO GROUP Your best fastener supplier!
Add to Cart
In the screw with nuts, the role of the gasket is mainly: increase the contact area, reduce pressure, prevent loosening, protect the Bai protect parts and screws.
A gasket is a mechanical seal between two objects, usually used to prevent pressure, corrosion, and natural pipeline expansion and contraction leakage between the two objects.Since machined surfaces cannot be perfect, irregularities can be filled with gaskets.
Gaskets are usually made of sheet materials such as pad, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, glass fiber, or plastic polymers (such as Teflon).Gaskets for specific applications may contain asbestos.
Products name | Ansi/Asme B 18.21.1 - 1983 Regular Helical Spring Lock Split Washers |
Material | Brass, Stainless Steel, Steel, Alloy steel/Carbon steel/Stainless st |
Size |
2#-3inch |
Surface treatment | Black/grey phosphate, zinc plated, nickel-plated, Rupert |
Application | Heavy Industry, Mining, Retail Industry, General Industry, Oil & Gas, |
Style | Box Packing+carton+pallets |
| Size | ID(mm) | OD(mm) | Thickness(mm) | Unit weight,Kg/1000pcs | |||
| min | max | min | max | min | max | ||
| SAE NO.4 | 3.05 | 3.37 | 7.8 | 8.12 | 0.64 | 1.01 | 0.29 |
| SAE NO.6 | 3.84 | 4.17 | 9.40 | 9.91 | 0.91 | 1.65 | 0.66 |
| SAE NO.8 | 4.65 | 4.98 | 11.00 | 11.51 | 0.91 | 1.65 | 0.87 |
| SAE NO.10 | 5.44 | 5.77 | 12.57 | 13.08 | 0.91 | 1.65 | 1.12 |
| SAE NO.12 | 6.22 | 6.73 | 14.15 | 14.66 | 1.30 | 2.03 | 1.81 |
| SAE 1/4 | 7.01 | 7.52 | 15.75 | 16.26 | 1.30 | 2.03 | 2.21 |
| SAE 5/16 | 8.61 | 9.12 | 17.30 | 17.86 | 1.30 | 2.03 | 2.51 |
| SAE 3/8 | 10.19 | 10.69 | 20.45 | 21.00 | 1.30 | 2.03 | 3.46 |
| SAE 7/16 | 11.79 | 12.29 | 23.24 | 23.80 | 1.30 | 2.03 | 4.48 |
| SAE 1/2 | 13.36 | 13.87 | 26.80 | 27.74 | 1.88 | 3.07 | 9.02 |
| SAE 9/16 | 14.96 | 15.47 | 29.18 | 30.12 | 1.88 | 3.07 | 10.43 |
| SAE 5/8 | 16.48 | 17.42 | 33.15 | 34.09 | 1.88 | 3.07 | 13.59 |
| SAE 3/4 | 20.45 | 21.39 | 37.13 | 38.07 | 2.74 | 4.06 | 20.11 |
| SAE 7/8 | 23.65 | 24.58 | 44.27 | 45.21 | 2.74 | 4.06 | 31.12 |
| SAE 1 | 26.80 | 27.74 | 50.62 | 51.56 | 2.74 | 4.06 | 40.67 |
| SAE 1-1/8 | 31.57 | 32.51 | 56.97 | 57.91 | 2.74 | 4.06 | 49.41 |
| SAE 1-1/4 | 34.75 | 35.69 | 63.32 | 64.26 | 3.45 | 4.88 | 75.03 |
| SAE 1-3/8 | 37.92 | 38.86 | 69.67 | 70.61 | 3.45 | 4.88 | 91.1 |
| SAE 1-1/2 | 40.10 | 42.04 | 76.02 | 76.96 | 3.45 | 4.88 | 110.8 |
| USS 3/16 NO.4 | 6.22 | 6.73 | 14.15 | 14.66 | 0.91 | 1.65 | 1.81 |
| USS 1/4 | 7.80 | 8.41 | 18.47 | 19.02 | 1.30 | 2.03 | 3.04 |
| USS 5/16 | 9.40 | 9.91 | 22.05 | 22.99 | 1.63 | 2.64 | 5.8 |
| USS 3/8 | 11.00 | 11.51 | 25.22 | 26.16 | 1.63 | 2.64 | 7.42 |
| USS 7/16 | 12.57 | 13.08 | 31.57 | 32.51 | 1.63 | 2.64 | 11.83 |
| USS 1/2 | 14.15 | 14.66 | 34.75 | 35.69 | 2.18 | 3.35 | 18.3 |
| USS 9/16 | 15.75 | 16.26 | 37.13 | 38.07 | 2.18 | 3.35 | 20.48 |
| USS 5/8 | 17.30 | 18.24 | 44.37 | 45.21 | 2.74 | 4.00 | 36.57 |
| USS 3/4 | 20.45 | 21.39 | 50.62 | 51.56 | 3.10 | 4.50 | 52.49 |
| USS 7/8 | 23.65 | 24.58 | 56.97 | 57.91 | 3.45 | 4.88 | 71.75 |
| USS 1 | 26.80 | 27.74 | 63.32 | 64.26 | 3.45 | 4.88 | 87.59 |
| USS 1.1/8 | 31.57 | 32.51 | 69.67 | 70.61 | 3.45 | 4.88 | 102.44 |
| USS 1.1/4 | 34.75 | 35.69 | 76.02 | 76.96 | 3.45 | 4.88 | 121.08 |
| USS 1.3/8 | 37.85 | 39.24 | 82.30 | 83.69 | 3.89 | 5.41 | 159.73 |
| USS 1.1/2 | 41.02 | 42.42 | 88.65 | 90.04 | 3.89 | 5.41 | 184.19 |
| USS 1.5/8 | 44.20 | 45.59 | 95.00 | 96.39 | 3.89 | 5.41 | 210.36 |
| USS 1.3/4 | 47.37 | 48.77 | 101.35 | 102.74 | 3.89 | 5.41 | 238.28 |
| USS 1.7/8 | 50.55 | 51.49 | 107.70 | 109.09 | 3.89 | 5.41 | 267.92 |
| USS 2 | 53.72 | 55.12 | 114.05 | 115.44 | 3.89 | 5.41 | 299.32 |
| USS 2-1∕4 | 60.08 | 61.46 | 120.4 | 121.79 | 4.91 | 6.29 | 387.49 |
| USS 2-1∕2 | 66.43 | 67.81 | 126.75 | 128.14 | 5.33 | 7.11 | 460.45 |
| USS 2-3∕4 | 72.77 | 74.67 | 133.1 | 135 | 5.79 | 7.87 | 544.46 |
| USS 3 | 79.12 | 81.02 | 139.45 | 142.35 | 6.32 | 8.3 | 631.12 |