Half Nyloc Nut UNC Zinc Plate Grade 5 by Allfast Solutions SKU NYL14CTZ 1/4 / 100 5/16 / 100 3/8 / 100 7/16 / 100 1/2 / 100 9/16 / 100 5/8 / 50 3/4 / 50 7/8 / 50 1" / 50 Diameter 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1" Pack Size 100 50 Quantity/Each Add to order