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.

Square washers have a square or rectangle shaped outside profile.
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SQUARE PLATE WASHER, PLAIN (INCH)

1/2 X 2 X 0.125 SQUARE WASHER
Web Price $143.40
SQUARE PLATE WASHER, PLAIN (INCH)

1/2 X 2 X 0.195 SQUARE WASHER
Web Price $101.38
SQUARE PLATE WASHER, PLAIN (INCH)

1/2 X 2 X 0.125 SQUARE WASHER
Web Price QUOTE
SQUARE PLATE WASHER, PLAIN (INCH)

1/2 X 2 X 0.195 SQUARE WASHER
Web Price QUOTE
SQUARE PLATE WASHER, PLAIN (INCH)

5/8 X 2 1/2 X 0.250 SQUARE WASHER
Web Price $157.21
Diameter N/A 1/2 N/A 1/2 N/A 1/2 N/A 1/2 N/A 5/8
Length N/A
Material N/A Carbon Steel
Finish N/A Plain
Package Quantity N/A 300 N/A 200 N/A 1 N/A 1 N/A 100