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Flat washers are used under bolt heads or nuts to increase the bearing area or offer greater hardness, so that the nut or bolt can be rotated without distortion of the bearing surface.

USS flat washers have a larger outer diameter than SAE flat washers.
USS FLAT WASHER, ZINC CLEAR CR+3 (INCH)
Unit of Measure
1 2 

Item #

Item Name

Package Quantity

Web Price

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300NWUSZ N/A 3 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $232.05
250NWUSZ N/A 2 1/2 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $211.71
225NWUSZ N/A 2 1/4 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $211.71
200NWUSZ N/A 2 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $199.19
187NWUSZ N/A 1 7/8 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $191.42
175NWUSZ N/A 1 3/4 USS FLAT WASHER ZINC PLATED (LBS) N/A 50 $191.42
150NWUSZ N/A 1 1/2 USS FLAT WASHER ZINC PLATED N/A 25 $67.65
125NWUSZ N/A 1 1/4 USS FLAT WASHER ZINC PLATED N/A 25 $43.29
250NWUSZ N/A 2 1/2 USS FLAT WASHER ZINC PLATED N/A 5 $42.37
225NWUSZ N/A 2 1/4 USS FLAT WASHER ZINC PLATED N/A 5 $42.37
200NWUSZ N/A 2 USS FLAT WASHER ZINC PLATED N/A 5 $39.87
187NWUSZ N/A 1 7/8 USS FLAT WASHER ZINC PLATED N/A 5 $38.30
175NWUSZ N/A 1 3/4 USS FLAT WASHER ZINC PLATED N/A 5 $38.30
112NWUSZ N/A 1 1/8 USS FLAT WASHER ZINC PLATED N/A 25 $36.96
137NWUSZ N/A 1 3/8 USS FLAT WASHER ZINC PLATED N/A 15 $36.67
100NWUSZ N/A 1 USS FLAT WASHER ZINC PLATED N/A 25 $30.16
87NWUSZ N/A 7/8 USS FLAT WASHER ZINC PLATED N/A 25 $24.57
62NWUSZ N/A 5/8 USS FLAT WASHER ZINC PLATED N/A 50 $24.57
50NWUSZ N/A 1/2 USS FLAT WASHER ZINC PLATED N/A 100 $23.81
75NWUSZ N/A 3/4 USS FLAT WASHER ZINC PLATED N/A 25 $17.98
43NWUSZ N/A 7/16 USS FLAT WASHER ZINC PLATED N/A 100 $16.49
56NWUSZ N/A 9/16 USS FLAT WASHER ZINC PLATED N/A 50 $14.81
18NWUSZ N/A 3/16 USS FLAT WASHER ZINC PLATED N/A 100 $12.81
37NWUSZ N/A 3/8 USS FLAT WASHER ZINC PLATED N/A 100 $9.90
31NWUSZ N/A 5/16 USS FLAT WASHER ZINC PLATED N/A 100 $8.06
Unit of Measure
1 2