Tool Steel Flat Stock Steel Material Width 1 in Thickness 3/32 in Fractional Size 3/32 in x 1 in x 36 in Finish Unfinished Length 36 in Length Tolerance +0.250 to +0.500 in Hardness Scale 221 to 225 BHN Grade D2 Standards ASTM-A681 FED-QQ-T-570 SAE-J-437