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PAI Industries · Hardware & Fasteners
BNU-7830
In stock · ships from Knoxville
This is a heavy-duty carbon steel axle nut from PAI Industries, designed as a direct replacement for Mack OE part number 21AX626.
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Advertised as a Mack engine part; exact models and years not verified. Listed as an axle nut in some inventories, but precise aftermarket fitment details are limited to 'Mack Engines' and compatibility with OE 21AX626.
Part data verified against 1 catalog sources
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It features a large 2-7/8"-12 thread and is intended for use with stud BSP-7361 in Mack engine applications. Typically replaced when threads are damaged or during major axle/engine service, it provides a durable fastening solution in demanding heavy-truck environments.
Part Number: BNU-7830
AXLE NUT
Vendor: PAI Industries
Dealer: KP Services Crossville
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