HILLMAN 883649 Hex Bolt, M6-1 Thread, 20 mm OAL, 10.9 Grade, Steel, Zinc-Plated, Metric Measuring, Coarse Thread

An assortment of class 10.9 metric flange bolts & nuts from the Hillman Group. Flange bolts are one-piece hex washer-head bolts with the flat bearing surface. The flange eliminates the need for an additional flat washer. Flange lock nuts are the one-piece, all-metal prevailing torque hex nuts. They can be screwed onto the end of a flange bolt to create a secure, closed fastener.