Airgas - G2150813 - Greenfield Industries Chicago-Latrobe® Style 559 1/4" Letter E X 2 1/2" Gold Oxide Cobalt HSS Screw Machine Length Drill Bit With 1/4" Straight Shank And 1 3/8" Spiral Flute

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Greenfield Industries Chicago-Latrobe® Style 559 1/4" Letter E X 2 1/2" Gold Oxide Cobalt HSS Screw Machine Length Drill Bit With 1/4" Straight Shank And 1 3/8" Spiral Flute

Airgas Part #:G2150813

Manufacturer Part #:50813

$NA.NA /NA

Each

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Greenfield Industries Chicago-Latrobe® 0.25" Dia X 2 1/2" Gold Oxide Screw Machine Length Drill Bit with 1/4" straight shank is made of premium cobalt high-speed steel to render extended tool life when drilling tougher materials by hand or machine. Drill bit with 1.375" spiral flute has a 135 deg P3 self-centering split point for minimal thrust and easier penetration. Heavy-duty drill bit with straw finish offers easy recognition of cobalt tools and is used in tool steel, alloy steel, carbon steel as well as cast iron drilling.

Heavy-duty geometry for drilling tougher materials by hand or machine
Shorter flute and overall length provide superior rigidity to minimize deflection when using heavy feed rates
Manufactured from premium cobalt high-speed steel
135° P3 split point is self-centering for reduced thrust and easier penetration, sizes under .0625" do not have split points
Straw and titanium nitride finishes standard from stock; titanium aluminum nitride is a non-stocked standard alternate coatings available as stock modifications
Straw finish allows for easy identification of cobalt tools
Titanium nitride PVD coating adds lubricity and hardness which enhances chip flow, finish hole quality and drill life
Titanium luminum nitride PVD coating combines the ability to work in high temperatures with added hardness to increase drill life

Drill Diameter

» 1/4"

Brand Name

» Chicago-Latrobe®

Drill Material

» Cobalt High Speed Steel

Shank Size

» 1/4"

Flutes

» Spiral

Drill Coating

» Gold Oxide

Shank Style

» Straight

Drill Type

» Screw Machine Length Drill Bit

Overall Length

» 2.5 in

Flute Length

» 1 3/8"