Greenfield Tap & Die 46779

Description

Greenfield Industries Chicago-Latrobe Style 550 Letter I X 4 1/8″ Gold Oxide Cobalt HSS Heavy Duty Jobber Length Drill Bit With .272″ Straight Shank And 2 7/8″ Spiral Flute

Features :

Manufactured to nas 907 type j geometry aerospace specifications
Heavy-duty construction for drilling in tough, high-tensile and work hardening materials under extreme operating conditions
Manufactured from premium cobalt high-speed steel, increasing hot hardness and extending drill wear life
135 P3 split point is self-centering for reduced thrust and easier penetration
Metric drills are manufactured to DIN 338 OAL and flute length specifications
Straw finish adds lubricity and easily identifies cobalt drills
Titanium nitride (TiN) coating adds lubricity and hardness, enhancing chip flow, finish hole quality, and drill life
Titanium aluminum nitride (TiAlN) coating combines the ability to work in high-temperatures with added hardness to increase drill life

Product Attributes :

Overall Length : 4.125 in
Drill Material : Cobalt High Speed Steel
Shank Style : Straight
Flute Length : 2 7/8″
Flutes : Spiral
Brand Name : Chicago-Latrobe
Drill Type : Jobber Length Drill Bit
Shank Size : .272″
Drill Coating : Gold Oxide