UNF Full Nuts. Grade 5 (8.8) High Tensile Steel. Zinc Plated Steel. 1/4" 7/16" 0.22" 28. 9/16" 1" 0.48" 18. 5/8" 15/16" 0.54" 18. 1 1/8" 1.63385 0.96" 12. 7/16" 11/16" 0.37" 20.
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