these bolts provide superior strength and corrosion resistance

1/4-28 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (1600)

12-14 x 2-1/2 Hex Washer Head Self Drilling Screw Zinc Plated Tek #3 (1500)

This bolts kit includes 250 high-strength A325 type 1 heavy hex bolts with a 7/8-9 diameter and 3 3/4 length

1-3/8" X 3" HSS Annular Cutter, Qualtech, Premium, DWC5-530-351 3/4-10 Grade 8 Hex Cap Screws Plain - Domestic USA these bolts provide superior strengthAnnular 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.