PLOW BOLTS  NO. 3 HEAD ANSI/ASME B18.9 1958 (R1977)
	All Dimensions in Inches

Bolt Diameter	Head Diameter			Feed Thickness	Depth of Square and Head		Width of Square
	Max.	Min. Sharp	Abs. Min. with Flat	Max.	Max.	Min.	Max.	Min. (Basic)
5/16-18	0.605	0.578	0.563	0.025	0.269	0.243	0.325	0.313
3/8-16	0.708	0.671	0.656	0.031	0.312	0.281	0.387	0.375
7/16-14	0.826	0.781	0.766	0.036	0.364	0.328	0.450	0.438
1/2-13	0.945	0.890	0.875	0.042	0.417	0.375	0.515	0.500
5/8-11	1.147	1.094	1.063	0.050	0.506	0.456	0.640	0.625
3/4-10	1.303	1.250	1.219	0.050	0.541	0.491	0.765	0.750
7/8-9	1.512	1.469	1.406	0.063	0.626	0.563	0.906	0.875
1-8	1.700	1.656	1.594	0.063	0.690	0.627	1.031	1.000