UNF HEXAGON HEAD BOLTS. UNF Thread (AF). Grade 5 (8.8) High Tensile Steel. Clear bright Zinc plated. 3/8" 1 1/2" 1" 9/16" 1/4" 24. 3/8" 2" 1" 9/16" 1/4" 24. 3/8" 2 1/4" 1" 9/16" 1/4" 24. 3/8" 2 1/2" 1" 9/16" 1/4" 24.
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