Item # HHS06250XXX, Heavy Hex Screw, 5/8" Nominal Dia. On Sales Systems Ltd.

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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Square and Hex Bolts and Screws > Heavy Hex Screws > Item # HHS06250XXX


	Item # HHS06250XXX, Heavy Hex Screw, 5/8" Nominal Dia.

Rolled Thread Heavy Hex Screws

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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.

Manufacturer · Specifications · Codes and Standards · Thread Length for Screw Lengths

Manufacturer

Manufacturer		Industrial Fasteners Institute

Specifications

Product		Square and Hex Bolts and Screws

Unit of Measure		English

Nominal Size or Basic Product Diameter		5/8 in

Nominal Size or Basic Product Diameter (Decimal)		0.6250 in

Max. Body Diameter (E)		0.6250 in

Min. Body Diameter (E)		0.605 in

Basic Width Across Flats (F)		1-1/16 in

Max. Width Across Flats (F)		1.062 in

Min. Width Across Flats (F)		1.031 in

Max. Width Across Corners (G)		1.227 in

Min. Width Across Corners (G)		1.175 in

Basic Head Height (H)		25/64 in

Max. Head Height (H)		0.403 in

Min. Head Height (H)		0.378 in

Min. Wrenching Height (J)		0.269 in

Max. Transition Thread Length (Y)		0.455 in

Max. Circular Runout of Bearing Surface FIM		0.019 in

Codes and Standards

Codes and Standards		ASME B18.2.1 1996

Thread Length for Screw Lengths

Nom. L_T for Screw Length (6 in. and Shorter)		1.500 in

Nom. L_T for Screw Length (Over 6 in.)		1.750 in

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