Sales Systems Ltd. - Heavy Hex Screws

Top of Head. Top of head shall be full form and chamfered with the diameter of chamfer circle being equal to the maximum width across flats, within a tolerance of minus 15%.
Wrenching Height, J. Wrenching height is a distance measured from the bearing surface up the side of the head at the corners. The width across corners shall be within the specified limits for minimum wrenching height.
Bearing Surface. Bearing surface shall be flat and washer faced. Diameter of washer face shall be equal to the maximum width across flats within a tolerance of minus 10 percent.
Thickness of the washer face shall be not less than 0.015 in. nor greater than 0.025 in. for screw sizes 3/4 in. and smaller, and not less than 0.015 in. nor greater than 0.035 in. for sizes larger than 3/4 in. Measurement of washer face diameter shall be taken at a height of 0.004 in. above the bearing surface.

Unit of Measure

Items	HHS05000XXX Heavy Hex Screw, 1/2" Nominal Dia.	HHS06250XXX Heavy Hex Screw, 5/8" Nominal Dia.	HHS07500XXX Heavy Hex Screw, 3/4" Nominal Dia.	HHS08750XXX Heavy Hex Screw, 7/8" Nominal Dia.	HHS10000XXX Heavy Hex Screw, 1" Nominal Dia.
Manufacturer	N/A Industrial Fasteners Institute
Product	N/A Square and Hex Bolts and Screws
Codes and Standards	N/A ASME B18.2.1 1996
Unit of Measure	N/A English
Nominal Size or Basic Product Diameter	N/A 1/2 in	N/A 5/8 in	N/A 3/4 in	N/A 7/8 in	N/A 1 in
Nominal Size or Basic Product Diameter (Decimal)	N/A 0.5000 in	N/A 0.6250 in	N/A 0.7500 in	N/A 0.8750 in	N/A 1.0000 in
Max. Body Diameter (E)	N/A 0.5000 in	N/A 0.6250 in	N/A 0.7500 in	N/A 0.8750 in	N/A 1.0000 in
Min. Body Diameter (E)	N/A 0.482 in	N/A 0.605 in	N/A 0.729 in	N/A 0.852 in	N/A 0.976 in
Basic Width Across Flats (F)	N/A 7/8 in	N/A 1-1/16 in	N/A 1-1/4 in	N/A 1-7/16 in	N/A 1-5/8 in
Max. Width Across Flats (F)	N/A 0.875 in	N/A 1.062 in	N/A 1.250 in	N/A 1.438 in	N/A 1.625 in
Min. Width Across Flats (F)	N/A 0.850 in	N/A 1.031 in	N/A 1.212 in	N/A 1.394 in	N/A 1.575 in
Max. Width Across Corners (G)	N/A 1.010 in	N/A 1.227 in	N/A 1.443 in	N/A 1.660 in	N/A 1.876 in
Min. Width Across Corners (G)	N/A 0.969 in	N/A 1.175 in	N/A 1.383 in	N/A 1.589 in	N/A 1.796 in
Basic Head Height (H)	N/A 5/16 in	N/A 25/64 in	N/A 15/32 in	N/A 35/64 in	N/A 39/64 in
Max. Head Height (H)	N/A 0.323 in	N/A 0.403 in	N/A 0.483 in	N/A 0.563 in	N/A 0.627 in
Min. Head Height (H)	N/A 0.302 in	N/A 0.378 in	N/A 0.455 in	N/A 0.531 in	N/A 0.591 in
Min. Wrenching Height (J)	N/A 0.215 in	N/A 0.269 in	N/A 0.324 in	N/A 0.378 in	N/A 0.416 in
Nom. L_T for Screw Length (6 in. and Shorter)	N/A 1.250 in	N/A 1.500 in	N/A 1.750 in	N/A 2.000 in	N/A 2.250 in
Nom. L_T for Screw Length (Over 6 in.)	N/A 1.500 in	N/A 1.750 in	N/A 2.000 in	N/A 2.250 in	N/A 2.500 in
Max. Transition Thread Length (Y)	N/A 0.385 in	N/A 0.455 in	N/A 0.500 in	N/A 0.556 in	N/A 0.625 in
Max. Circular Runout of Bearing Surface FIM	N/A 0.016 in	N/A 0.019 in	N/A 0.022 in	N/A 0.025 in	N/A 0.028 in