Dimensions of Oval Neck Track Bolts

Nominal Diameter and Threads per Inch, D	Full Size Body Diameter, E		Head								Neck									Length Under Head, L	Minimum Thread Length, I
			A			H			r1	r2	O			R			P	r3	V
	Min	Max	Nom	Min	Max	Nom	Min	Max			Nom	Min	Max	Nom	Min	Max
1/2 - 13	0.482	0.515	7/8	0.8125	0.9375	5/16	0.25	0.3750	11/16	9/32	5/8	0.5938	0.6563	19/32	0.5625	0.6250	5/16	1/2 body dia. of bolt	Same as body dia. of bolts	Under 7 in. by steps of 1/4 in. From 7 in. to 10 in. by steps of 1/2 in.	11/8
5/8 - 11	0.605	0.642	15/64	1.0156	1.1406	25/64	0.33	0.4531	59/64	23/64	13/16	0.7813	0.8438	25/32	0.7500	0.8125	318				1 1/
3/4 - 10	0.729	0.768	19/32	1.2188	1.3438	15/32	0.41	0.5313	1 5/32	7/16	1 1/16	1.0313	1.0938	1 1/32	1.0000	1.0625	7/16				1 3/4
7/8 - 9	0.852	0.895	1 31/64	1.4219	1.5469	35/64	0.48	0.6094	1 25/64	33/64	1 7/32	1.1875	1.2500	1 3/16	1.1563	1.2188	1/2				2
1 - 8	0.976	1.022	1 11/16	1.625	1.75	5/8	0.56	0.6875	15/8	19/32	1 3/8	1.3438	1.4063	1 11/32	1.3125	1.3750	9/16				2 1/4
1 1/8 - 7	1.098	1.149	1 57/64	1.8281	1.9531	45/64	0.64	0.7656	1 55/64	43/64	1 7/32	1.5000	1.5625	1 1/2	1.4688	1.5313	5/8				2 1/2

General Notes :

• All dimensions are given in inches.
• Tolerances:
  Length L +- 1/8 in.
  Neck O and R +- 1/32 in.
  Head A and H +- 1/16 in.

Notes :

• In ordering bolts, specify the nominal diameter D over the threads and not the body diameter
• Standard sizes for industrail use are 1/2, 5/8, 3/4, 7/8 and 1 in. with heavy square nuts.
• Applies to all rows.