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Handan city Yongnian District Maide Fasteners Co. Ltd Galvanized Hex Bolts，Fully Threaded Hex Bolts，Galvanized Hex Nut
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Large Diameter Stainless Steel Flat Washers / Fender Washers / Spacer Washers Round Hole

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Large Diameter Stainless Steel Flat Washers / Fender Washers / Spacer Washers Round Hole

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Brand Name : MAIDE

Model Number : Standard

Certification : ISO

Place of Origin : Yongnian，Hebei,China

MOQ : 1TON

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Delivery Time : 7-30work days

Packaging Details : Bags (25kg)

Material : Steel

Size : M8-M42

Color : Hot Dip Galvanized

Standard : DIN126

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Hot Dip Galvanized Flat Metal Washers , DIN126 Steel Flat Pad With Round Hole

Product Description

Galvanizing Flat washers The role of flat pad is:
1, increase the contact area of the screw and the machine
2, to eliminate the spring pad when the screws on the machine surface damage. Use must be: spring pad a flat pad, flat pad next to the machine surface, spring pad between the flat and nut. Flat pad is to increase the screw force surface.
Spring pad in order to prevent the screw loose, force to play a certain amount of buffer protection. Although the flat pad can do sacrifice pad. But more often are used as a supplemental pad or flat pressure pad. The spring pad acts as a locking member. If the workpiece hole and diameter diameter (S) is too large, do not use the flat pad or direct use of the elastic pad, not only will hurt the workpiece, the most important is the screw from the fixed or not only a fixed role.Especially for high-strength working parts. Therefore, when using the elastic pad, when the value (S) within the allowable range may not use flat pad.

The Role of Flat Mat

1. Increase the contact area between the screw and the machine.


2. Eliminate damage to the surface of the machine when the spring pad is unloaded. When used, it must be a spring pad and a flat pad. The flat pad is facing the surface of the machine. The spring pad is between the flat pad and the nut.

Flat pad standard


National standards are different.
Here is the United States flat pad standard:

Specification Minor Diameter Outside Diameter Thickness Tolerance Thickness Tolerance Disintegration
USS 3/16 6.22～6.73 14.15～14.66 0.91～1.65 0.91～1.40
1.40～1.65 　　 　　 　　 　　
USS 1/4 7.80～8.31 18.47～19.02 1.30～2.03 1.30～1.65
1.65～2.03 　　 　　 　　 　　
USS 5/16 9.40～9.91 22.05～22.99 1.63～2.64 1.63～2.20
2.20～2.64 　　 　　 　　 　　
USS 3/8 11.00～11.51 25.22～26.16 1.63～2.64 1.63～2.20
2.20～2.64 　　 　　 　　 　　
USS 7/16 12.57～13.08 31.57～32.51 1.63～2.64 1.63～2.20
2.20～2.64 　　 　　 　　 　　
USS 1/2 14.15～14.60 34.75～35.69 2.18～3.35 2.18～2.70
2.70～3.00 　　 　　 　　 　　
3.00～3.35 　　 　　 　　 　　
USS 9/16 15.75～16.26 37.13～38.07 2.18～3.35 2.18～2.70
2.70～3.00 　　 　　 　　 　　
3.00～3.35 　　 　　 　　 　　
USS 5/8 17.30～18.24 44.27～45.21 2.74～4.06 2.74～3.20
3.20～3.60 　　 　　 　　 　　
3.60～4.06 　　 　　 　　 　　
USS 3/4 20.45～21.39 50.62～51.56 3.10～4.50 3.10～3.60
3.60～4.20 　　 　　 　　 　　
4.20～4.50 　　 　　 　　 　　
USS 7/8 23.65～24.58 56.97～57.91 3.45～4.88 3.45～4.00
4.00～4.30 　　 　　 　　 　　
4.30～4.88 　　 　　 　　 　　
USS 1 26.80～27.74 63.32～64.26 3.45～4.88 3.45～4.00
4.00～4.30 　　 　　 　　 　　
4.30～4.88 　　 　　 　　 　　
USS 11/8 31.57～32.51 69.67～70.61 3.45～4.88 3.45～4.00
4.00～4.30 　　 　　 　　 　　
4.30～4.88 　　 　　 　　 　　
USS 11/4 34.75～35.69 76.02～76.96 3.45～4.88 3.45～4.00
4.00～4.30 　　 　　 　　 　　
4.30～4.88 　　 　　 　　 　　
USS 13/8 37.85～39.24 82.30～83.69 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　
USS 11/2 41.02～42.42 88.65～90.04 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　
USS 15/8 44.20～45.59 95.00～96.39 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　
USS 13/4 47.37～48.77 101.35～102.74 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　
USS 17/8 50.55～51.04 107.70～109.09 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　
USS 2 53.72～55.12 114.05～115.44 3.89～5.41 3.89～4.40
4.40～5.00 　　 　　 　　 　　
5.00～5.41 　　 　　 　　 　　

Large Diameter Stainless Steel Flat Washers / Fender Washers / Spacer Washers Round Hole


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