An assortment of grade 8 hex-head flange bolts & nuts from The Hillman Group. Flange Bolts are one-piece hex washer-head bolts with a flat bearing surface. The flange eliminates the need for an additional flat washer. Flange lock nuts are 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. Variants included in this assortment feature a coarse 5/8"-11 screw thread and run 1-1/2" thru 3" in length. Full assortments of #43206 contain six (6) refills comprised of Hillman item numbers #43207 - #43212.