National Item Identification Number

00-427-0413
004270413
3820-00-427-0413
3820004270413

National Stock Number

Item Name

BIT,ROCK DRILL

Federal Supply Class

3820

Description

A detachable, end cutting drilling tool with an internal thread or tapered socket at one end for attaching a rock drill rod. The opposite end is designed with two or more cutting edges for drilling into rock formation by impact and a slight rotary motion. It contains a hole or holes in the cutting for the purpose of conducting air or water to clear the hole being drilled. It is used with powered drifter drills, sinker drills, and the like.

Commercial and Government Entity Code (Supplier Data)

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Reference Numbers (Part Numbers)

17250-52A

Required Categories

DRILLED HOLE DIAMETER
THE MANUFACTURERS DATA
MANUFACTURERS CODE
DESIGN CONTRO

Required Description

2.250 INCHES
40983
17250-52A