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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.

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

Material

Carbon Steel SAE Grade 8

Finish

Item #

Item Name

Type

Nominal Size

Material

Finish

Package Quantity

Web Price

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6NWSA N/A #6 SAE FLAT WASHER N/A Per Pound N/A #6 N/A Carbon Steel N/A Plain N/A 50 $19.29 Add To Cart
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6NWSAZ N/A #6 SAE FLAT WASHER ZINC PLATED N/A Per Pound N/A #6 N/A Carbon Steel N/A Zinc Plated N/A 50 $11.71 Add To Cart
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6NWSAG N/A #6 SAE FLAT WASHER GALVANIZED N/A Per Pound N/A #6 N/A Carbon Steel N/A Galvanized N/A 50 $26.28 Add To Cart
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8NWSA N/A #8 SAE FLAT WASHER N/A Per Pound N/A #8 N/A Carbon Steel N/A Plain N/A 50 $13.04 Add To Cart
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8NWSAZ N/A #8 SAE FLAT WASHER ZINC PLATED N/A Per Pound N/A #8 N/A Carbon Steel N/A Zinc Plated N/A 50 $11.22 Add To Cart
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8NWSAG N/A #8 SAE FLAT WASHER GALVANIZED N/A Per Pound N/A #8 N/A Carbon Steel N/A Galvanized N/A 50 $19.38 Add To Cart
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10NWSA N/A #10 SAE FLAT WASHER N/A Per Pound N/A #10 N/A Carbon Steel N/A Plain N/A 50 $10.19 Add To Cart
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10NWSAZ N/A #10 SAE FLAT WASHER ZINC PLATED N/A Per Pound N/A #10 N/A Carbon Steel N/A Zinc Plated N/A 50 $10.97 Add To Cart
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10NWSAG N/A #10 SAE FLAT WASHER GALVANIZED N/A Per Pound N/A #10 N/A Carbon Steel N/A Galvanized N/A 50 $17.39 Add To Cart
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25NWSA N/A 1/4 SAE FLAT WASHER N/A Per Pound N/A 1/4 N/A Carbon Steel N/A Plain N/A 50 $9.20 Add To Cart
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25NWSA8D N/A 1/4 SAE FLAT WASHER GRADE 8 ZINC DICHROMATE N/A Each N/A 1/4 N/A SAE Grade 8 N/A Zinc Dichromate N/A 100 $3.85 Add To Cart
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25NWSAZ N/A 1/4 SAE FLAT WASHER ZINC PLATED N/A Per Pound N/A 1/4 N/A Carbon Steel N/A Zinc Plated N/A 50 $10.04 Add To Cart
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25NWSA8D/DOM N/A 1/4 SAE FLAT WASHER GRADE 8 ZINC DICHROMATE DOMESTIC N/A Each N/A 1/4 N/A SAE Grade 8 N/A Zinc Dichromate N/A 100 $4.83 Add To Cart
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25NWLLD N/A 1/4 SAE TENSION WASHER L9 ALLOY ZINC DICHROMATE N/A Each N/A 1/4 N/A Carbon Steel N/A Zinc Dichromate N/A 100 $11.05 Add To Cart
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25NWSA8Z/DOM N/A 1/4 SAE FLAT WASHER GRADE 8 ZINC PLATED DOMESTIC N/A Each N/A 1/4 N/A SAE Grade 8 N/A Zinc Plated N/A 100 $4.80 Add To Cart
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25NWSAD/XT N/A 1/4 SAE FLAT WASHER (EXTRA HEAVY) ZINC DICHROMATE N/A Each N/A 1/4 N/A Carbon Steel N/A Zinc Dichromate N/A 100 $8.60 Add To Cart
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25NWSAG N/A 1/4 SAE FLAT WASHER GALVANIZED N/A Per Pound N/A 1/4 N/A Carbon Steel N/A Galvanized N/A 50 $15.20 Add To Cart
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25NWSA8/DOM N/A 1/4 SAE FLAT WASHER GRADE 8 DOMESTIC N/A Each N/A 1/4 N/A SAE Grade 8 N/A Plain N/A 9000 QUOTE Add To Cart
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31NWSA N/A 5/16 SAE FLAT WASHER N/A Per Pound N/A 5/16 N/A Carbon Steel N/A Plain N/A 50 $9.21 Add To Cart
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31NWSA8D N/A 5/16 SAE FLAT WASHER GRADE 8 ZINC DICHROMATE N/A Each N/A 5/16 N/A SAE Grade 8 N/A Zinc Dichromate N/A 100 $4.88 Add To Cart
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31NWSAZ N/A 5/16 SAE FLAT WASHER ZINC PLATED N/A Per Pound N/A 5/16 N/A Carbon Steel N/A Zinc Plated N/A 50 $10.03 Add To Cart
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31NWSA8D/DOM N/A 5/16 SAE FLAT WASHER GRADE 8 ZINC DICHROMATE DOMESTIC N/A Each N/A 5/16 N/A SAE Grade 8 N/A Zinc Dichromate N/A 100 $6.68 Add To Cart
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31NWLLD N/A 5/16 SAE TENSION WASHER L9 ALLOY ZINC DICHROMATE N/A Each N/A 5/16 N/A Carbon Steel N/A Zinc Dichromate N/A 100 $14.03 Add To Cart
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31NWSA8Z/DOM N/A 5/16 SAE FLAT WASHER GRADE 8 ZINC PLATED DOMESTIC N/A Each N/A 5/16 N/A SAE Grade 8 N/A Zinc Plated N/A 100 $6.18 Add To Cart
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31NWSAD/XT N/A 5/16 SAE FLAT WASHER (EXTRA HEAVY) ZINC DICHROMATE N/A Each N/A 5/16 N/A Carbon Steel N/A Zinc Dichromate N/A 100 $9.88 Add To Cart
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