THREAD CUTTING SCREWS FLAT HEAD PHILLIPS UNDERCUT Dimensions apply to undercut head only
	All Dimensions in Inches

Basic Screw Diameter	Head Diameter		Head Height		Phillips Driver Size
	Max. Edge Sharp	Min. Edge  Rounded  or Flat	Max.	Min.
2/56	0.172	0.147	0.036	0.028	1
4/40	0.225	0.195	0.047	0.038	1
6/32	0.279	0.244	0.059	0.048	2
8/32	0.332	0.292	0.070	0.058	2
10/24	0.385	0.340	0.081	0.068	2
10/32	0.385	0.340	0.081	0.068	2
12/24	0.438	0.389	0.092	0.078	3
1/4-20	0.507	0.452	0.107	0.092	3
5/16-18	0.635	0.568	0.134	0.116	4
3/8-16	0.762	0.685	0.161	0.140	4