Grade 8 Coarse & Fine Thread. Coarse Thread Bolts. Fine Thread Bolts. 3/8"-16 X 4" (25). 3/8"-16 X 4-1/2" (25). 3/8"-16 X 5" (25). 3/8"-16 X 5-1/2" (25). 3/8"-16 X 6" (25).
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