Heavy Duty Mil-Carb (MC®)

For machinery construction, in-plant maintenance work, heavy-duty assembly, and on-site construction jobs, Wrought Washer now offers MC2® heavy-duty hardened washers.

MC2® heavy-duty hardened washers are fabricated from prime quality medium carbon steel. Through hardened (quenched and tempered) R/C 38-45, and electro zinc-yellow plated. MC2® washers are available in 1/4″ through 1″ bolt sizes in U.S. Standard and S.A.E. dimensions.

Other sizes are available on special order.

Certificates of compliance are available upon request.

U.S Standard Dimensions

Bolt SizeOutside DiameterInside DiameterThicknessApprox Lbs per M PcsApprox Pcs per Carton
1/4.750.313.064/.0807.66,500
5/16.875.375.079/.09311.94,200
3/81.000.438.079/.09315.43,250
7/161.250.500.090/.10628.61,750
1/21.375.563.122/.14645.51,100
9/161.500.625.122/.14652.6950
5/81.750.688.136/.16090.9550
3/42.000.813.136/.160111.1450
7/82.250.938.136/.160133.3375
12.5001.063.136/.160166.7300

S.A.E Dimensions

Bolt SizeOutside DiameterInside DiameterThicknessApprox Lbs per M PcsApprox Pcs per Carton
1/4.625.281.064/.0804.89,400
5/16.688.344.079/.0936.58,000
3/8.813.406.079/.0939.45,300
7/16.922.469.090/.10613.33,600
1/21.063.531.122/.14623.52,000
9/161.188.594.122/.14628.81,600
5/81.313.656.136/.160401,150
3/41.469.813.136/.16049.5950
7/81.750.938.136/.16070.8650
12.0001.063.136/.16090500