Made in USA - Subland Drill Bit: for 5/16-18 Screws, 0.261″ Drill, 0.4063″ Step, 5-1/4″ OAL - 01604206 - MSC Industrial Supply
DEWALT DW1220 5/16-Inch Cobalt Alloy Split Point Twist Drill Bit - Amazon.com
5/16" Drill Bit with Plastic Case - Smoky Lake Maple Products, LLC
Liberty Supply Professional Maple Tree Tapping Drill Bit for 5/16" Tap Hole - Amazon.com
21PCS Drill Bit Set 1/16 to 1/4 5/16 3/8 1/2 Professional Twist Drill Bits for Stainless Steel, Steel Wood Plastic Aluminum Alloy - China Drill Bits, Drill | Made-in-China.com
DRILL BIT SET CARBIDE ROTARY 5 PC 1/8" TO 5/16" (CHA-CM-MPB-SET5) - Ballard Industrial
KnKut 5/16" x 9" Extra Length Drill Bit
Tusk EHSS 13 Extra Long HSS Drill Bit- 13mm x 315mm M35 135 deg – Hitools
Sutton HSS Drill Bit 5/16in - D1050794 - Sutton | Repco New Zealand
Bosch Daredevil 5/16 in. Multi-Purpose Tungsten Carbide Drill Bit for Drilling Tile, Masonry, Wood, Metal and Concrete MP09 - The Home Depot
5-16 Brad Point Drill Bit for Mushroom Plug Spawn use