ASME B18.10 Elliptical Neck Track Bolts

ASME B18.10 Elliptical Neck Track Bolts

Dimensions of Elliptical Neck Track Bolts

Nominal Diameter and Threads per Inch, D Full Size Body Diameter, E Head Neck V Length Under Head, L Minimum Thread Length, I
A H r1 r2 O R P r5 r6
Min Max Nom Min Max Nom Min Max Nom Min Max Nom Min Max
3/4 - 10 0.7290 0.768 1 9/32 1.2188 1.3438 15/32 0.406 0.5313 1 5/32 7/16 63/64 0.9531 1.0156 6 1/64 0.9219 0.9844 7/16 9/32 4 1/64 Same as body Diam. of Bolts Under 7 in. by steps of 1/4 in. From 7 in. to 10 in. by steps 1 of 1/2 in. 1 3/4
7/8 - 9 0.852 0.895 1 31/64 1.4219 1.5469 35/64 0.484 0.6094 1 25/64 33/64 1 3/16 1.1563 1.2188 1 5/32 1.125 1.1875 1/2 5/16 5 1/64 2
1 - 8 0.976 1.022 1 11/16 1.625 1.75 5/8 0.563 0.6875 1 5/8 19/32 1 3/8 1.3438 1.4063 1 11/32 1.3125 1.3750 9/16 3/8 1 5/16 2 1/4
1 1/8 - 7 1.098 1.149 1 57/64 1.8281 1.9531 45/64 0.641 0.7656 1 55/64 43/64 1 1/2 1.5313 1.4688 1 15/32 1.4375 1.5000 5/8 7/16 1 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
  • Applies to all rows.