Socket Products

Shoulder Screw

Dimensions of Hexagon Socket Head Shoulder Screws

Nominal Size (Basic Screw Diameter)	D		A		H		C	J		T	M	R
	Shoulder Diameter		Head Diameter		Head Height		Chamfer or Radius	Hexagon Socket Size		Key Engagement	Fillet Transition Diameter	Head Fillet Radius
	Max	Min	Max	Min	Max	Min	Max	Nom		Min	Max	Max
1/4 (0.250)	0.2480	0.2460	0.375	0.357	0.188	0.177	0.020	1/8	0.125	0.094	0.276	0.009
5/16 (0 .312)	0.3105	0.3085	0.438	0.419	0.219	0.209	0.026	5/32	0.156	0.117	0.345	0.012
3/8 (0.375)	0.3730	0.3710	0.562	0.543	0.250	0.240	0.031	3/16	0.188	0.141	0.413	0.015
1/2 (0.500)	0.4980	0.4960	0.750	0.729	0.312	0.302	0.040	1/4	0.250	0.188	0.550	0.020
5/8 (0 .625)	0.6230	0.6210	0.875	0.853	0.375	0.365	0.050	5/16	0.312	0.234	0.687	0.024
3/4 (0.750)	0.7480	0.7460	1.000	0.977	0.500	0.490	0.069	3/8	0.375	0.281	0.826	0.030
1 (1 .000)	0.9980	0.9960	1.312	1.287	0.625	0.610	0.083	1/2	0.500	0.375	1.098	0.040
1-1/4 (1 .250)	1.2480	1.2460	1.750	1.723	0.750	0.735	0.102	5/8	0.625	0.469	1.368	0.050
1-1/2 (1.500)	1.4980	1.4960	2.125	2.095	1.000	0.980	0.138	7/8	0.875	0.656	1.638	0.060
1-3/4 (1.750)	1.7480	1.7460	2.375	2.345	1.125	1.105	0.157	1	1.000	0.750	1.908	0.070
2 (2.000)	1.9980	1.9960	2.750	2.720	1.250	1.230	0.176	1-1/4	1.250	0.937	2.178	0.080