ASME B18.10 Oval Neck Track Bolts

ASME B18.10 Oval Neck Track Bolts

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.