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Weights for ASME B18.5 Round Head Ribbed Neck

Dimensions of ASME B18.5 Round Head Ribbed Neck Bolts

Dimensions of ASME B18.5 Round Head Ribbed Neck Bolts

Nominal Size or Basic Bolt Diameter Body Diameter, E Head Diameter, A Head Height, H Max Head to Rib Length, M Number of Ribs, N Min Diameter Over Ribs, O Length of Depth Over Ribs, P Maximum Fillet Radius, R
=<7/8 Inch 1 in. and 1 1/8 >= 1 1/4 in.
Max Min Max Min Max Min =<7/8 Inch >= 1 in. Apporx. (+ -) 0.031 (+ -) 0.031 (+ -) 0.031
No. 10 0.19 0.199 0.182 0.469 0.438 0.114 0.094 0.062 0.094 9 0.21 0.25 0.407 0.594 0.031
1/4 0.25 0.26 0.237 0.594 0.563 0.145 0.125 0.062 0.094 10 0.274 0.25 0.407 0.594 0.031
5/16 0.3125 0.324 0.298 0.719 0.688 0.176 0.156 0.062 0.094 12 0.34 0.25 0.407 0.594 0.031
3/8 0.375 0.388 0.360 0.844 0.782 0.208 0.188 0.062 0.094 12 0.405 0.25 0.407 0.594 0.031
7/16 0.4375 0.452 0.421 0.969 0.907 0.239 0.219 0.062 0.094 14 0.47 0.25 0.407 0.594 0.031
1/2 0.5 0.515 0.483 1.094 1.032 0.270 0.250 0.062 0.094 16 0.534 0.25 0.407 0.594 0.031
5/8 0.625 0.642 0.605 1.344 1.219 0.344 0.313 0.125 0.125 19 0.66 0.313 0.438 0.625 0.062
3/4 0.75 0.768 0.729 1.594 1.469 0.406 0.375 0.125 0.125 22 0.785 0.313 0.438 0.625 0.062