Structural Washers F 436 1 Plain

Structural Washers F 436 1 Plain

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Structural Washers F 436 1 Plain Finish. Dimensionally comparable to the USS plain washer, but with a smaller outside diameter, manufactured from a higher grade of steel and heat-treated. Designed to be used with A325 & A490 structural bolts.

Material: Structural washers shall be manufactured from a steel which conforms to the following chemical composition requirements - Phosphorous 0.050%, Sulfer 0.060%

Hardness: Rockwell C38-45



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