ASME B18.10 Elliptic Neck Track Bolts

Dimensions of Dimensions of ASME B18.10 Elliptic Neck Track Bolts

Nominal
Diameter
and
Threads
per Inch,
D
[Note (1)]

Full Size
Body
Diameter, E

Head

Neck

V
Note (2)]

Length
Under
Head, L [Note ( 2 )]

Minimum
Thread
Length,
l

r 5

r 6

Min.

Max.

Nom.

Min.

Max.

Nom.

Min.

Max.

Nom.

Min.

Max.

Nom.

Min.

Max.

3/4–10

0.729

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

61/64

0.9219

0.9844

7/16

9/32

41/64

Same as body diam. ofbolt

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

51/64

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

15/16

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

2 1/2

GENERAL NOTES:
(a) All dimensions are given in inches.
(b) Tolerances: Length L ± 1⁄8 in.
Neck O and R ± 1⁄32 in.
Head A and H ± 1⁄16 in.
NOTES:
(1) In ordering bolts, specify the nominal diameter D over the threads and not the body diameter.
(2) Applies to all rows.