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SKU:- ZST4474723 | Part Number:- 4474723
Sale price
$149.89
Regular price
The Stemco Axle Nut Pro-Torq Saf Hp 4474723 is a heavy-duty Pro-Torq axle spindle nut used to secure wheel bearings on trailer and drive axles. It uses a single nut design with a spring steel keeper to lock onto the spindle while maintaining correct wheel bearing preload under high torque loads. With a 3.48 in-12 thread and an eight-point 4.813 in hex, it suits common TP trailer and Pro-Par axle spindles and is installed using a matching heavy-duty socket. The nut is heat-treated for strength and wear resistance in demanding road transport service. It is compatible with HM518445 / HM518410 outer bearing cup and cone sets and is widely applied on Fruehauf, Meritor, Dana Spicer, Hendrickson and Ingersoll axles. This construction supports accurate wheel end adjustment, helps prevent over-tightening and bearing damage, and provides reliable wheel retention on trucks and trailers in fleet and workshop applications.
- Thread Size: 3.48 in-12 - Nut Hex / Tool Socket Size: 4.813 in - Socket Size: 4-13/16 in - Thread Diameter: 3.48 in - Sides: 8 - Outside Diameter: 4.750 in - Thickness: 1.359 in - Outer Bearing Cup/Cone: HM518445 / HM518410 - Suits heavy-duty trailer axles including Fruehauf Pro-par, Meritor TP, Dana Spicer, Hendrickson and Ingersoll applications - Used to secure wheel bearings and lock the wheel end on truck and trailer axle spindles - Pro-Torq single nut design with integrated locking keeper for controlled bearing adjustment - Thread size 3.48 in-12 to match common TP trailer spindle specifications - Nut hex / socket size 4.813 in for use with standard heavy-duty axle nut sockets - Eight-point socket interface provides positive engagement and reduces risk of rounding - Heat-treated construction for strength and wear resistance in high-torque service - Engages increased thread contact area to hold wheel bearings firmly in position - Helps maintain correct wheel bearing preload to support consistent wheel end performance - Supports accurate wheel speed monitoring on ABS-equipped wheel ends - Reduces risk of over-tightening compared with multi-nut or jam-nut arrangements - Compatible with outer bearing cup and cone set HM518445 / HM518410 commonly used on TP trailer hubs - Suitable for workshop servicing, axle rebuilds and wheel end maintenance on road transport fleets - Install using specified socket size and follow manufacturer torque and back-off procedure for correct endplay
