Square Self-Locking Washers

Self-Locking Washers are used in connection with lacing anchors, weld pins to fasten insulation blankets or covers in place, Just press the self-locking washer onto the pin up to the insulation materials until the desired position is reached. Then clip off, (or bend over) the remaining portion of pin for a permanent attachment.

Hole Diameter

Self-Locking Washers – 10GA( 3.4mm), 3mm, 12GA( 2.7mm) 14GA(2.0mm)

Available Sizes (Customize Dimension or Materials available upon request) :

Type S-250 S-150 S-125
Diameter 2-1/2 x 2-1/2 1-1/2 x 1-1/2 1-1/4 x 1-1/8
Thickness 0.016 0.016 0.016
Material Mild Steel / SS 304 Mild Steel/SS 304 Mild Steel /SS 304
Plating Galv. Galv. Galv.
Edges / flat or beveled beveled beveled beveled
Packaged per carton 1000 1000 1000

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