STS Industrial - Bolts & Screws

 

BULLET DRILL BITS

Dewalt Pilot Point Drill Bits are a two stage drill bit. The 1st stage is a pilot point on the tip of the drill bit that creates a smaller hole ahead of the bit’s flutes and primary cutting edge. The 2nd stage drills through the remaining material leaving an accurate hole to the finished diameter. The pilot point also reduces lock-up on breakthrough. Available in standard jobber length in the fractional sizes below. Sizes 1/16″ to 11/64″ are split point drills (no pilot point).

Pilot Point Drill Bits

SIZE

DECIMAL EQUIVALENT

FLUTE LENGTH

OVERALL LENGTH

  1/16* 0.0625   7/8 1  7/8
  5/64* 0.0781 1 2
  3/32* 0.0938 1  1/4 2  1/4
  7/64* 0.1094 1  1/2 2  5/8
  1/8* 0.1250 1  5/8 2  3/4
  9/64* 0.1406 1  3/4 2  7/8
  5/32* 0.1563 2 3  1/8
 11/64* 0.1719 2  1/8 3  1/4
  3/16 0.1875 2  5/16 3  1/2
 13/64 0.2031 2  7/16 3  5/8
  7/32 0.2188 2  1/2 3  3/4
 15/64 0.2344 2  5/8 3  7/8
  1/4 0.2500 2  3/4 4
 17/64 0.2656 2  7/8 4  1/8
  9/32 0.2813 2 15/16 4  1/4
 19/64 0.2969 3  1/16 4  3/8
  5/16 0.3125 3  3/16 4  1/2
 21/64 0.3281 3  5/16 4  5/8
 11/32 0.3438 3  7/16 4  3/4
 23/64 0.3594 3  1/2 4  7/8
  3/8 0.3750 3  5/8 5
 25/64 0.3906 3  3/4 5  1/8
 13/32 0.4063 3  7/8 5  1/4
 27/64 0.4219 3 15/16 5  3/8
  7/16 0.4375 4  1/16 5  1/2
 29/64 0.4531 4  3/16 5  5/8
 15/32 0.4688 4  5/16 5  3/4
 31/64 0.4844 4  3/8 5  7/8
  1/2 0.5000 4  1/2 6

*Split point design (no pilot point). All dimensions in inches.

Sources: Drillco Cutting Tools Product Catalog 2013, Champion Cutting Tools 2011 Product Catalog, Norseman/CTD Product Catalog 2013

Note: All material included on this page is informational only, and should not be used as one’s sole source for design purposes. STS Industrial, Inc. and its affiliates do not guarantee the accuracy of the information on this site, and retain no liability for the use or misuse of the information contained on this site.