Product family

Inch ASME Round Head Square Neck Bolts

ASME B18.5

Available variants

Compare variations by dimension, color, finish, and material.

Part Number	Thread Size	Diameter	Diameter (Min.)	Diameter (Max.)	Thread Pitch	Length	Thread Length	Head Diameter (Min.)	Head Diameter (Max.)	Head Height(Min.)	Head Height (Max.)	Collar Diameter	Collar Height	Head Type	Neck Style	Thread Direction	Thread Amount	Measurement System	Specification
IARSQB004-1420X612X65	1/4"-20	0.25	0.237	0.26	20	6.5	6.344	0.563	0.594	0.125	0.145	0.26	0.156	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-1420X712X75	1/4"-20	0.25	0.237	0.26	20	7.5	7.344	0.563	0.594	0.125	0.145	0.26	0.156	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-1420X7X7	1/4"-20	0.25	0.237	0.26	20	7	6.844	0.563	0.594	0.125	0.145	0.26	0.156	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-1420X8X8	1/4"-20	0.25	0.237	0.26	20	8	7.844	0.563	0.594	0.125	0.145	0.26	0.156	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-3816X414	3/8"-16	0.375	0.36	0.388	16	4.25	4.031	0.782	0.844	0.188	0.208	0.388	0.219	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-3816X514	3/8"-16	0.375	0.36	0.388	16	5.25	5.031	0.782	0.844	0.188	0.208	0.388	0.219	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-3816X612X65	3/8"-16	0.375	0.36	0.388	16	6.5	6.281	0.782	0.844	0.188	0.208	0.388	0.219	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-3816X712X75	3/8"-16	0.375	0.36	0.388	16	7.5	7.281	0.782	0.844	0.188	0.208	0.388	0.219	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB004-3816X7X7	3/8"-16	0.375	0.36	0.388	16	7	6.781	0.782	0.844	0.188	0.208	0.388	0.219	Round Head	Square Neck	Right Hand	Full Thread	Inch	ASME B18.5 and SAE J429
IARSQB005-789X712	7/8"-9	0.875	0.852	0.895	9	7.5	6	1.719	1.844	0.438	0.459	0.895	0.469	Round Head	Square Neck	Right Hand	Part Thread	Inch	ASME B18.5 and SAE J429