Flat washer

Flat washer

washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a screw or nut.
 Flat washer is also called Plain washer, which is often of metal, used to spread the load of a screwed fastening. Additionally, a plain washer may be used when the hole is a larger diameter than the fixing nut.

SYSTEM

SIZE

MATERIAL

FINISH

SPECIFICATION

METRIC
SYSTEM 

M3-M56

Mild Steel
Medium Carbon Steel 

PLAIN
BLACK
ZP
YZP
H.D.G

DIN125A
DIN9021
DIN440R

INCH
SYSTEM 


6#-2.1/2"

ASME B 18.22.11 (USS, SAE)
ASTM F436
FENDER WASHER 

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