Nylon insert locknuts are hex nuts with a nylon-filled collar

6 x 3/4 Phillips Bugle Decking Screws Yellow Zinc Plated - Carton (15

3/8-16 x 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (400)

while the red Quik Guard® coating offers a beautiful color match and essential protection against corrosion

1-3/16" X 1" HSS Annular Cutter, Qualtech, Premium, DWC5-530-142 3/4-10 Hex Cap Screws 18-8 Stainless Steel Nylon insert locknuts are hexAnnular cutters are designed for fast, efficient hole making. Annular cutters cut only that material necessary to produce a quality hole. Works with Hougen Magnetic Drill, Milwaukee and similar machines.