Description
OTR: AN4973
Part Type: Axle / Spindle Nut (Pro‑Torq style)
Category: Wheel end / driveline hardware (heavy‑duty trucks)
Details
Identified as an axle nut used on heavy‑duty truck wheel ends
Commonly a Pro‑Torq spindle nut assembly that secures and sets bearing preload on the axle
Typical thread spec: ~3.25″‑12 (standard for many Dana/Spicer, Meritor, Eaton axles)
Common Cross References
This part number crosses to several major aftermarket/OE numbers:
Stemco: 449‑4973
National / Federal‑Mogul: 614973
World American: WA07‑8054
Automann: 209.4973 / 209.4973TL
SKF / Timken equivalents: AX12‑3250 / 412‑3250
Application
Heavy‑duty trucks (Freightliner, Kenworth, Peterbilt, International, Mack, etc.)
Axles like Dana Spicer, Meritor, Eaton with Pro‑Torq systems
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