Pan Head Combination Drive Screw Style

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	Thursday, November 20, 2008

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Machine Screw Head Dimensions

Pan Head Combination Drive

The Combination head accepts both phillips and standard blade screwdrivers. The most common use for this type of drive is for applications where a fastener is expected to be driven and backed-out several times.

Size	G		H		J		A		M		T		N	Recess Penetration		Driver Size
	Head Dimensions				Slot Dimensions				Recess Dimensions
	Head Diameter		Head Height		Width		Depth		Width		Depth		Wing Depth
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Min	Max	Min
4	.219	.205	.080	.070	.039	.031	.040	.030	.122	.109	.078	.060	.019	.071	.053	1
6	.270	.256	.097	.087	.048	.039	.050	.037	.166	.153	.091	.066	.028	.080	.055	2
8	.322	.306	.115	.105	.054	.045	.058	.045	.182	.169	.108	.082	.030	.097	.071	2
10	.373	.357	.133	.122	.060	.050	.068	.053	.199	.186	.124	.100	.031	.113	.089	2
12	.425	.407	.125	.112	.067	.056	.077	.061	.259	.246	.141	.115	.034	.124	.098	3
1/4	.492	.473	.175	.162	.075	.064	.087	.070	.281	.268	.161	.135	.036	.144	.118	3
5/16	.615	.594	.218	.203	.084	.072	.106	.085	.350	.337	.193	.169	.059	.173	.149	4

This page was last updated 04/24/06 10:42 AM 1119