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PAI · Hardware & Fasteners
BNU-7890
In stock · ships from Knoxville
Heavy-duty steel axle nut manufactured by PAI, designed as a direct replacement for Mack truck axle spindle nuts.
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All confirmed applications for this part number.
Mack Trucks
Mack Trucks
Heavy-duty kit listing shows 'Mack Engine Application', but OE cross-reference numbers (25QJ168, 25QJ138) typically correspond to axle spindle nuts. Verify by VIN or service manual for your specific chassis.
Part data verified against 1 catalog sources
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It features a 2-7/8"-12 thread, a 4-1/8" hex, and a 3/8" height, typically used with washer BSP-7361 to secure wheel bearings and hub assemblies. Replaced during wheel-end maintenance or when threads become worn. Interchanges with Mack OE numbers 25QJ168, 25QJ138, and 25122671.
Part Number: BNU-7890
AXLE NUT
Dealer: Post Onsite
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