Product family

Inch ASME Round Head Ribbed 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
IARHRNB011-1420X212	1/4"-20	0.25	0.237	0.26	20	2.5	0.75	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Part Thread	Inch	ASME B18.5
IARHRNB011-1420X3	1/4"-20	0.25	0.237	0.26	20	3	0.75	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Part Thread	Inch	ASME B18.5
IARHRNB013-1420X1	1/4"-20	0.25	0.237	0.26	20	1	0.568	0.425	0.448	0.083	0.103	0.29	0.407	Round Head	Ribbed Neck	Right Hand	Full Thread	Inch	NONE
IARHRNB013-1420X58	1/4"-20	0.25	0.237	0.26	20	0.625	0.35	0.425	0.448	0.083	0.103	0.29	0.25	Round Head	Ribbed Neck	Right Hand	Full Thread	Inch	NONE
IARHRNB013-1420X916	1/4"-20	0.25	0.237	0.26	20	0.5625	0.2875	0.425	0.448	0.083	0.103	0.29	0.25	Round Head	Ribbed Neck	Right Hand	Full Thread	Inch	NONE
IARHRNB124-1420X134	1/4"-20	0.25	0.237	0.26	20	1.75	0.75	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-1420X112	1/4"-20	0.25	0.237	0.26	20	1.5	0.781	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-1420X134	1/4"-20	0.25	0.237	0.26	20	1.75	1.0310000000000001	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-1420X2	1/4"-20	0.25	0.237	0.26	20	2	1.2810000000000001	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-1420X212	1/4"-20	0.25	0.237	0.26	20	2.5	1.7810000000000001	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-1420X3	1/4"-20	0.25	0.237	0.26	20	3	2.281	0.563	0.594	0.125	0.145	0.274	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB011-51618X34X075	5/16"-18	0.3125	0.298	0.324	18	0.75	0.361	0.688	0.719	0.156	0.176	0.34	0.25	Round Head	Ribbed Neck	Right Hand	Part Thread	Inch	ASME B18.5
IARHRNB011-51618X3X3	5/16"-18	0.3125	0.298	0.324	18	3	0.875	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Part Thread	Inch	ASME B18.5
IARHRNB011-51618X78X0875	5/16"-18	0.3125	0.298	0.324	18	0.875	0.486	0.688	0.719	0.156	0.176	0.34	0.25	Round Head	Ribbed Neck	Right Hand	Part Thread	Inch	ASME B18.5
IARHRNB124-51618X134	5/16"-18	0.3125	0.298	0.324	18	1.75	0.875	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-51618X1	5/16"-18	0.3125	0.298	0.324	18	1	0.43674999999999997	0.688	0.719	0.156	0.176	0.34	0.407	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-51618X112	5/16"-18	0.3125	0.298	0.324	18	1.5	0.74975	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-51618X114	5/16"-18	0.3125	0.298	0.324	18	1.25	0.49975	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-51618X2	5/16"-18	0.3125	0.298	0.324	18	2	1.2497500000000001	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5
IARHRNB279-51618X212	5/16"-18	0.3125	0.298	0.324	18	2.5	1.7497500000000001	0.688	0.719	0.156	0.176	0.34	0.594	Round Head	Ribbed Neck	Right Hand	Standard Thread Length	Inch	ASME B18.5