Truss Head Screw Style - The Thelen Channel

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	Thursday, November 20, 2008

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Machine Screw Head Dimensions

Truss Head

The truss head is also called oven, stove, or oval binding head. It has a low head, and a large diameter. It can be used to cover large diameter clearance holes in sheet metal, or where additional play is necessary during assembly. It is also preferred in applications where minimal clearance exists above the head. Suggest pan head as substitute.

Size	A		H		J		T		M		G		N	Phillips Driver Size
	Head Diameter		Head Height		Slot Width		Slot Depth		Dimensions of Recess
	Head Diameter		Head Height		Slot Width		Slot Depth		Diameter		Depth		Width
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Min
2	.194	.180	.053	.044	.031	.023	.031	.022	.104	.091	.059	.041	.018	1
3	.226	.211	.061	.051	.035	.027	.036	.026	.110	.097	.066	.049	.018	1
4	.257	.241	.069	.059	.039	.031	.040	.030	.112	.099	.069	.051	.018	1
5	.289	.272	.078	.066	.043	.035	.045	.034	.128	.115	.085	.067	.019	1
6	.321	.303	.086	.074	.048	.039	.050	.037	.158	.145	.084	.059	.027	2
8	.384	.364	.102	.088	.054	.045	.058	.045	.173	.160	.099	.074	.029	2
10	.448	.425	.118	.103	.060	.050	.068	.053	.188	.175	.115	.090	.030	2
12	.511	.487	.134	.118	.067	.056	.077	.061	.248	.235	.128	.103	.032	3
1/4	.573	.546	.150	.133	.075	.064	.087	.070	.263	.250	.143	.118	.033	3
5/16	.698	.666	.183	.162	.084	.072	.106	.085	.352	.339	.193	.168	.059	4
3/8	.823	.787	.215	.191	.094	.081	.124	.100	.383	.370	.226	.202	.063	4

This page was last updated 04/24/06 10:42 AM 1226