Hillman 3/8 In. Alloy Steel Yellow Dichromate Split Lock Washer (100 Ct.) Brand_Arrow and enlarge existing holes using

and enlarge existing holes using two adapters on one pilot bit (adapters and pilot bit sold separately)

Grip Range 1/4-Inch -1/2"

Heavy duty high carbon steel blade has 2 rough and 2 smooth edges

polyurethane foam

5-year warranty when properly installed with HDPE SDR-9

Hillman 3/8 In. Alloy Steel Yellow Dichromate Split Lock Washer (100 Ct.) Brand_Arrow and enlarge existing holes usingHardened, yellow dichromate split lock washer prevents nuts and bolts from turning, slipping, and coming loose because of vibration and torque. Grade 8. These fasteners contain split ends that help 'lock' into the mating material, thus providing a locking feature when tightened beneath a nut.