Heavy Duty Trucks - Wheel Cap Nuts

Wheel Cap Nuts (Fasteners)
Outer Cap Nuts (Ball Seat Wheels)

Part No. Description   599601 (5996L) 599602 (5996R) 1 1/8” x 16 cap nut – mounts standard single wheels and wide base wheels to 1 1/8” studs and provides additional 1/8” hex height. Also mounts outer dualed wheel to 1 1/8” inner cap nut. *

Part No. Description   599501 (5995L) 599502 (5995R) 3/4” x 16 cap nut – mounts standard single wheels and (5995L) wide base wheels to 3/4” studs. *

Inner Cap Nuts (Ball Seat Wheels)

Part No. Description   598801 (5988L) 598802 (5988R) For use with standard length studs (1.31” to 1.44” stud standout) or longer studs not to exceed 1.88” stud standout. Full external threads, counter bore 5/16” deep at open end. For use with aluminum inner and outer wheels. Prevents stud from bottoming out in cap nut. *

Part No. Description   789601 (7896L) 789602 (7896R) Inner thread 3/4” x 16, outer thread 1 1/8” x 16. For use with steel inner dual wheels and aluminum outer dual wheel with 1.31” to 1.44” stud standout. *

Wheel Cap Nuts (Fasteners)
Outer Cap Nuts (For Two-Piece Flange Nuts - Hub Piloted Wheels)

Part No. Description   039874 Two-piece, 33mm hex, M22 x 1.5mm, RH thread flange nut. Mounts single and dual wheels to wheel centering hubs. Right hand threads used both sides of vehicle. Single wheels require 2” (50.8mm) stud standout. Dualed wheels require 2 13/16” stud standout.

Part No. Description   430632 Two-piece, 33mm hex, M22 x 1.5mm, RH thread, sleeved cap nut. Mounts single aluminum wheels, with 32mm bolt holes, to wheel centering hubs with stud standouts less than 1.92” (48.75mm). Right-hand threads used on both sides of vehicle.

Part No. Description   430732 Two-piece, 33mm hex, M22 x 1.5mm, RH thread, sleeved cap nut. Mounts dual aluminum wheels, with 32mm bolt holes, to wheel centering hubs with stud standouts less than 2.85” (72mm). Right-hand threads used on both sides of vehicle.