Milwaukee 1/4 in. x 12 in. Thunderbolt Aircraft Length Black Oxide Drill Bit-48-89-2772 - The Home Depot


Model # 48-89-2772

Internet # 202256171

Store SKU # 775186

1/4 in. x 12 in. Thunderbolt Aircraft Length Black Oxide Drill Bit

Milwaukee 1/4 in. x 12 in. Thunderbolt Aircraft Length Black Oxide Drill Bit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$8.97 / each


Model # 48-89-2772

Internet # 202256171

Store SKU # 775186

The Milwaukee 48-89-2772 1/4 in. Thunderbolt Black Oxide Drill Bit is recommended for use with portable drills. This drill bit features a parabolic flute form to clear chips and debris to keep the bit cool, and the thick core offers protection against side-load breakage. The black oxide construction provides durability, and this drill bit is excellent for drilling on curved surfaces.

  • Thunderbolt web, provides longer life and faster driller times
  • Parabolic flute, clears chips faster
  • Black oxide construction for durability
  • 135-degree split point, precision start no walking


Assembled Depth (in.)  0.63 in  Assembled Height (in.)  7.75 in 
Assembled Width (in.)  1.88 in  Bit Diameter  1/4 in 
Bit Length (in.)  12  Bit diameter (in.)  0.25 
Drilling Depth (in)  2.75  Shank Diameter  3/8 in 
Shank Diameter (in.)  .375 
Bit Material  Black Oxide  Color Family  Black 
Cordless/Corded  Cordless  Drill & Router Bit Type  Drill Bits 
Drill Bit Type  Twist  Drill Bit Type(s) Included  Twist 
Individual/Set  Individual  Min Chuck Size Required  N/A 
Power Tool Product Type  Power Tool Accessory  Returnable  90-Day 
Self-Feeding  No  Shank Style  3-Flat 
Tools Product Type  Power Tool 


Rated 4.1 out of 5 by 7 reviewers.
Rated 5.0 out of 5.0 by Long drill This bit worked very well as a pilot while assembling a few large timber structures. Highly recommend this product. March 10, 2015
Rated 5.0 out of 5.0 by Super drill bit. Super sharp, bore right through the timbers without any problems. Never once did I have to reverse the bit to unclog the hole being drilled. September 16, 2014
Rated 1.0 out of 5.0 by one time use bought this to use drilling through 4x4 posts, with my heavy duty drill. it warped after one use. not sure if I can return it. disappointed, indeed! April 1, 2014
Rated 5.0 out of 5.0 by good drill bit good drill for my project which involved drilling 6" down the center of a 1" dowel September 16, 2014
Rated 5.0 out of 5.0 by Excellent drill bit. Good value for the money. Bit did an excellent job. Would buy again. September 16, 2014
Rated 5.0 out of 5.0 by Worked Perfectly. The quality I would expect from Milwaukee. Worked perfectly. July 29, 2014
Rated 3.0 out of 5.0 by Overpriced for a common item. This item does not stand out except for the unusual length, making this a specialty-use tool. January 14, 2014
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