Metric 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.

A hardened steel structural washer is manufactured in accordance with ASTM Standard F436.
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METRIC F436M FLAT WASHER, HARDENED, PLAIN

M14 METRIC F436 STRUCTURAL WASHER
Web Price $317.81
METRIC F436M FLAT WASHER, HARDENED, PLAIN

M14 METRIC F436 STRUCTURAL WASHER
Web Price QUOTE
METRIC F436M FLAT WASHER, HARDENED, PLAIN

M16 METRIC F436 STRUCTURAL WASHER
Web Price $510.12
METRIC F436M FLAT WASHER, HARDENED, PLAIN

M16 METRIC F436 STRUCTURAL WASHER
Web Price QUOTE
METRIC F436M FLAT WASHER, HARDENED, PLAIN

M20 METRIC F436 STRUCTURAL WASHER
Web Price $317.60
Diameter N/A M14 N/A M14 N/A M16 N/A M16 N/A M20
Length N/A
Material N/A Hardened Steel
Finish N/A Plain
Package Quantity N/A 1800 N/A 100 N/A 1250 N/A 50 N/A 900