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On my trailer (7000# Dexter axles) the bolts that pass through the spring brackets welded to the trailer frame (front spring eye, equalizer eye and rear spring eye are 9/16" x 2 7/8", (shoulder is 2 5/16", threaded end is 9/16" of thread making the total length the 2 7/8") nut is 7/16"-20.
The longer bolts for the Road Armor trailair shackle plates are 9/16" x 3 3/8", Shoulder is 2 13/16", thread is the same.
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Mark & Karen
2021 3121rl - slide toppers, cottage white, TST 507 TPMS, X-Factors, disc brakes
2021 F-350, 6.7L, SRW CC LB - B&W Companion, Bakflip cover
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