Upgrade steer axle wheel ends with the Stemco 450‑4836 Pro‑Torq Axle Spindle Fastener, a premium locking spindle nut renowned for its safety, precision, and durability.
Stemco Part Number: 450‑4836
Thread Size: 1½″–12 coarse thread
Tool Socket: 2½″ 6‑point (OTC #1921)
Keeper Ring (Locking Collar): Inner diameter 1.750″, thickness 0.093″, flat tab design for secure fit
Designed for 12,000–14,000 lb steer axles from OEMs like Meritor and Navistar
One‑nut design simplifies maintenance and ensures precise bearing preload
Current cross references include:
Ceromet K1501 (competitor Pro‑Torq alternative)
Zip‑Torq: cross‑ref 400‑4836
Auto‑Torq: Not applicable (N/A) for this thread size
Infinite micro‑adjustment (0.001″ increments) for optimal bearing preload and extended tire/wheel-end life
Single‑nut design eliminates risk of over‑tightening jam nuts and ensures consistent end‑play
Flat bearing contact improves seal performance and wheel bearing alignment
6‑point socket design (2½″) enables safe, high‑torque installation
Final back‑off: ¼ turn after 100 ft‑lb torque on steer axle, then secure with keeper ring per Pro‑Torq instructions
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