UNF Imperial Grade C All Metal Zinc Stover Locking Nuts 1/4 5/16 3/8 7/16 1/2"

Thread - UNF. Finish - Clear Zinc Plated. Grade - Grade C (above 8.8 High Tensile Steel). 1/4 - 28Tpi, 7/16" Spanner, Nut Height = 5.5mm. 5/16 - 24Tpi, 1/2" Spanner, Nut Height = 6.7mm. 3/8 - 24Tpi, 9/16" Spanner, Nut Height = 8.3mm.

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