United Steel and Fasteners
1500 Industrial Drive
Itasca, Il 60143
630-250-0900
email: us_f@msn.com                                                             Home



FROG BOLTS

United steel manufactures two types of frog bolts, used in frog and crossing.  Square head and button head oval neck, or elliptical neck bolts.  All bolts are manufactured as full body bolts with cut threads in grades 5 and 8 per A.R.E.A. specifications, available in 3/8  through 1-1/2 diameter.  Furnished with heavy square nuts upon request.

 

Button Head, Oval Neck Frog Bolts

Square Head

Min Thread

 
Diam Length

Head

Oval Neck

Frog Bolts

Lgth

 

Nuts

D L A H r1 r2 O R P F H I Threads per inch Thick-
ness
Width across Flats
3/8   11/16 15/64     17/32 33/64 3/16 9/16 1/4 1 1/4 16 3/8 11/16
1/2   7/8 5/16 11/16 9/32 5/8 19/32 5/16 3/4 21/64 1 1/2 13 1/2 7/8
5/8   1 5/64 25/64 59/64 23/64 13/16 25/32 3/8 1 5/16 27/64 1 3/4 11 5/8 1 1/16
3/4 Over 1 9/32 15/32 1 5/32 7/16 1 1/16 1 1/32 7/16 1 1/8 1/2 2 10 3/4 1 1/4
7/8 6 1 31/64 35/64 1 25/64 33/64 1 7/32 1 3/16 1/2 1 5/16 19/32 2 1/4 9 7/8 1 7/16
1 Inches 1 11/16 5/8 1 5/8 19/32 1 3/8 1 11/32 9/16 1 1/2 21/32 2 1/2 8 1 1 5/8
1 1/8   1 57/64 45/64 1 55/64 43/64 1 17/32 1 1/2 5/8 1 11/16 3/4 2 3/4 7 1 1/8 1 13/16
1 1/4                 1 7/8 27/32 3  7 1 1/4 2
1 3/8                 2 1/16 29/32 3 1/4 6 1 3/8 2 3/16
1 1/2                 2 1/4 1 3 1/2 6 1 1/2 2 3/8