Type B Washers

Type B washers are manufactured to the ANSI B18.22.1 specification.

All sizes listed are stocked in plain and zinc-plated.

Bolt SizeOutside DiameterInside DiameterThicknessApprox Lbs per M PcsApprox Pcs per Carton
#8 Narrow.375.188.0401.049,000
#10 Narrow.406.203.0401.240,400
#6 Regular.438.156.0401.533,500
#8 Regular.500.188.0402.025,000
1/4 Narrow.500.281.0602.320,000
#10 Regular.563.203.0402.519,400
5/16 Narrow.625.344.0603.713,400
#10 Wide.734.203.0607.07,150
1/4 Regular.750.281.060
3/8 Narrow.750.406.0605.48,600
5/16 Regular.875.344.0608.75,000
7/16 Narrow.875.469.0607.36,200
1/4 Wide1.000.281.06012.33,900
3/8 Regular1.000.406.06011.24,000
1/2 Narrow1.000.531.0609.64,150
5/16 Wide1.125.344.06015.43,100
3/8 Wide1.250.406.10533.01,500
1/2 Regular1.250.531.10530.01,600
5/8 Narrow1.250.656.10527.01,800
1/2 Wide1.750.531.10565.0775
5/8 Regular1.750.656.10562.0800
1 Narrow1.7501.062.10546.0850
3/4 Regular2.000.813.10579.0550