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Long silver auger bit with spiral flutes and screw tip

Drill America

Drill America DMS73-5009 9/16" x 30" Auger Bit

SKU CH-XGB2-1HR4S

Long 30" auger bit drills deep, clean holes in thick timber with self-feeding screw tip and wide flutes for efficient chip removal

  • 9/16" diameter bores wide holes for cable or pipe runs
  • 30" overall length reaches through thick beams and joists
  • self-feeding screw tip pulls the bit forward with minimal effort
  • deep spiral flutes clear chips continuously for smooth drilling
  • high-carbon steel construction resists wear in structural timber

9/16" x 30" Auger Bit

The Drill America DMS73-5009 is a high-carbon steel auger bit built for deep boring in wood. Its 9/16 inch diameter and 30 inch overall length suit structural timber, beams and thick stock. A self-feeding screw tip pulls the bit through the material with minimal applied force.

Woodworkers drilling deep cable or pipe runs

Tradespeople running electrical cables, plumbing lines or utility conduits through joists and studs will find the long reach and efficient chip clearance useful. Users who only need shallow holes in sheet goods or who require a shorter bit for tight spaces should look at something else.

No bundled accessories or software

The product ships as a single auger bit without additional cutters, extensions or carrying case. California Proposition 65 warnings apply regarding chemicals known to cause cancer and reproductive harm.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $132.99
Pricier than about 89% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDRILL AMERICA

Questions about this item

What drill chuck size is required to hold the 9/16" shank on this auger bit?

A chuck capacity of at least 9/16 inch is needed to secure the shank. Most 1/2 inch drills accept this size directly.

Can this 30" length be used effectively with a standard 1/2" cordless drill?

The long 30 inch shaft reaches deep cavities, but the high torque demand suits a corded or high-voltage cordless drill best.

How do I confirm the self-feeding screw tip is engaging properly during use?

The bit should pull itself into the wood with light pressure. If it spins without advancing, the tip may be dull or the wood too hard.

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