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Malleable Iron Washers

Malleable cast iron round washers are used in dock and wood construction. These oversized washers have a large bearing surface designed to prevent bolt heads and nuts from pulling into the wood.

Stock

Diameters: 3/8" - 1"
Origin: Domestic (no keyhole) and Import (keyhole)
Finish: Black and hot-dip galvanized

Dimensions

Bolt SizeATWeight In Pounds
Per 100 Pieces
Outside DiameterThickness Gauge
3/8 2-1/2 1/4 18
1/2 2-1/2 1/4 22
5/8 2-3/4 5/16 32
3/4 3 7/16 42
7/8 3-1/2 7/16 55
1 3-3/4 1/2 63
1-1/8 4-1/2 1/2 96
1-1/4 5 9/16 121
1-1/2 6 3/4 187

Reference ASTM A47 for general casting information.

Slight variations in thickness and outside diameter dimensions may exist from one lot of washers to another. If these dimensions are critical, ask your Portland Bolt sales representative to check the dimensions of current inventory prior to ordering.