Drill America Single 5/16" HSS Solid Counterbore, Tough Core Cutter for Mag Drills and Steel Work, Handy Pick for Fabricators and Steel Crews, Sharp Cutter Built for Long Tool Life

Regular price $49.33 Sale price$88.79you save $39.46
Product ID: 1242-8836
UPC:





Drill America Single 5/16" HSS Solid Counterbore
✔️ Single counterbore, 5/16", HSS, Fast Clean Holes, Mag Drill Ready

This Drill America 5/16" HSS Solid Counterbore is an annular cutter for fast, clean, large holes in steel with a magnetic drill. It's a go-to in structural steel, shipyards and fab shops. This is a single piece listing.

✅ Brand: Drill America
✅ Mfr part number: DEWCBRSOL5/16
✅ Product type: Counterbore
✅ Pack size: Single, 1 piece
✅ Size or length: 5/16"
✅ Material: HSS

💡 What is an annular cutter and why use it instead of a twist drill?

Annular cutters only cut the rim of the hole, so they work faster with less power.

  • They leave a solid slug instead of turning it all to chips.
  • Cuts are cleaner and more accurate than twist drills in steel.
  • They run great on magnetic drills for big holes.

Pick up the Drill America 5/16" HSS Solid Counterbore and keep your jobs moving.

✝️