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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. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a nut or bolt.

USS flat washers have a larger outer diameter than SAE flat washers. Unless the buyer has a specific USS or SAE requirement, the buyer should consider the measurements, based on need, and not whether the flat washer is USS or SAE.
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Material

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Item #

Item Name

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Web Price

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6NWUSZ N/A #6 USS FLAT WASHER ZINC PLATED N/A 50 QUOTE Add To Cart
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8NWUSZ N/A #8 USS FLAT WASHER ZINC PLATED N/A 50 QUOTE Add To Cart
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18NWUS N/A 3/16 USS FLAT WASHER N/A 50 $120.29 Add To Cart
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18NWUSZ N/A 3/16 USS FLAT WASHER ZINC PLATED N/A 50 $135.15 Add To Cart
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18NWUSZ N/A 3/16 USS FLAT WASHER ZINC PLATED N/A 5 $27.06 Add To Cart
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25NWUS N/A 1/4 USS FLAT WASHER N/A 50 $78.59 Add To Cart
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25NWUS8D N/A 1/4 USS FLAT WASHER GRADE 8 ZINC DICHROMATE N/A 6000 $149.81 Add To Cart
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25NWUSG N/A 1/4 USS FLAT WASHER GALVANIZED N/A 50 $142.28 Add To Cart
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25NWUSZ N/A 1/4 USS FLAT WASHER ZINC PLATED N/A 50 $81.40 Add To Cart
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25NWUS8D/DOM N/A 1/4 USS FLAT WASHER GRADE 8 ZINC DICHROMATE DOMESTIC N/A 6000 $264.48 Add To Cart
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25NWUS8Z/DOM N/A 1/4 USS FLAT WASHER GRADE 8 ZINC PLATED DOMESTIC N/A 6000 $273.39 Add To Cart
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25NWUS9D N/A 1/4 USS TENSION WASHER L9 ALLOY ZINC DICHROMATE N/A 6200 $743.31 Add To Cart
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25NWUS8/DOM N/A 1/4 USS FLAT WASHER GRADE 8 DOMESTIC N/A 6000 $328.49 Add To Cart
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25NWUS N/A 1/4 USS FLAT WASHER N/A 5 $18.34 Add To Cart
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25NWUSZ N/A 1/4 USS FLAT WASHER ZINC PLATED N/A 5 $20.63 Add To Cart
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25NWUSG N/A 1/4 USS FLAT WASHER GALVANIZED N/A 5 $29.98 Add To Cart
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25NWUS8D/DOM N/A 1/4 USS FLAT WASHER GRADE 8 ZINC DICHROMATE DOMESTIC N/A 100 $9.22 Add To Cart
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25NWUS8D N/A 1/4 USS FLAT WASHER GRADE 8 ZINC DICHROMATE N/A 100 $4.87 Add To Cart
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25NWUS9D N/A 1/4 USS TENSION WASHER L9 ALLOY ZINC DICHROMATE N/A 100 $24.64 Add To Cart
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25NWUS8Z/DOM N/A 1/4 USS FLAT WASHER GRADE 8 ZINC PLATED DOMESTIC N/A 100 $8.59 Add To Cart
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31NWUS N/A 5/16 USS FLAT WASHER N/A 50 $75.62 Add To Cart
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31NWUS8D N/A 5/16 USS FLAT WASHER GRADE 8 ZINC DICHROMATE N/A 4000 $144.65 Add To Cart
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31NWUSG N/A 5/16 USS FLAT WASHER GALVANIZED N/A 50 $128.11 Add To Cart
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31NWUS8D/DOM N/A 5/16 USS FLAT WASHER GRADE 8 ZINC DICHROMATE DOMESTIC N/A 3500 $251.00 Add To Cart
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31NWUS8Z/DOM N/A 5/16 USS FLAT WASHER GRADE 8 ZINC PLATED DOMESTIC N/A 3500 $239.65 Add To Cart
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