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IRWIN® Series 30190 1/4" X 4" X 3/16" 3-Flat/Straight Shank Black And Gold Oxide Coated Jobber Length Drill Bit

Airgas Part #:VIS3019016B

Manufacturer Part #:3019016B

$3.24 /Each
Package Size Options
$3.24 Each
$38.88 Carton 12 Each / Carton
$388.80 Case 120 Each / Case

Item Details

  • IRWIN® Black And Gold HSS 1/4" Dia X 4" Fractional Straight Shank Jobber Length Drill Bit with 3 flattened shank of size 3/16" includes heavy-duty web construction for strength and durability. Drill bit with 2 3/4" twist length has a 135 deg split point that begins drilling immediately, minimizing bit walk. It provides accurate drilling without a center punch and has laser-etched markings for easy identification.


  • Laser-etched markings for easy identification
  • High speed steel features a black body and gold flute
  • Heavy duty web construction for strength and durability
  • 135° split point begins drilling immediately minimizing bit "walk"
  • 3-Flatted shank on 3/16" and above for better chuck grip
  • Provides accurate drilling without a center punch
  • Engineered with premium high speed steel with black and gold oxide coating for corrosion resistance


  • 135° Split Point


  • Sheet Metal
  • Mild Steel
  • High Alloy Steel

Product Attributes

Drill Type

» Jobber Length Drill Bit

Drill Diameter

» 1/4"

Overall Length

» 4"

Shank Size

» 3/16"

Shank Style

» 3-Flat
» Straight

Drill Material

» High Speed Steel

Drill Coating

» Black And Gold Oxide

Flute Length

» 2 3/4"

Trade Name

» Series 30190