Wheel Stud Hole Sizes
This chart has the hole sizes for our most popular studs.
Part # Description Hole Size
123A 5/8-18 x 2-5/8" long 16mm
123A-1 5/8-18 x 2.6" long 41/64"
123B 5/8-11 x 3-7/8" long 43/64"
123C 5/8-11 x 2-3/8 long 41/64"
123D 5/8-18 x 2-3/8 long 41/64"
123E 5/8-18 x 2.9" long 16mm
123E-1 5/8-18 x 2.925" long 41/64"
123F 1/2-20 x 3" long 14mm
123F-1 1/2"-20 x 3.5" long 14mm
123G 1/2-20 x 3.65" long 1/2"
123H 5/8-11 x 2-3/4" long 43/64"
123J 5/8-18 x 3-15/16" long 43/64"
300-7705 5/8-18, 2.75" long 21/32"
300-7706 5/8-18, 2.9" long 21/32"
300-7707 5/8-18, 3.25" long 21/32"
300-7708 5/8-18, 3.4" long 21/32"
300-7709 5/8-18, 3.6" long 21/32"
Note:When reaming a hub, size and straightness is always very important.

Speedway Engineering 13040 Bradley Ave. Sylmar, Ca. 91342 Phone 818-362-5865 Fax 818-362-5608
All Rights Reserved © Speedway Engineering 2003