National Item Identification Number

00-126-1789
001261789
5133-00-126-1789
5133001261789

National Stock Number

Item Name

COUNTERBORE,MACHINE

Federal Supply Class

5133

Description

An end cutting tool having two or more cutting edges with flutes or grooves for the passage of cuttings, an integral or removable holder designed for adaption to the end of a machine spindle. The flutes or grooves are usually helical to give a positive rake at the cutting edges. It is designed to form a flat-bottomed enlargement of the mouth of a previously formed cylindrical hole. For items requiring a holder but the holder is not included, use CUTTER, COUNTERBORE.

Commercial and Government Entity Code (Supplier Data)

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40679

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MILLERSBURG REAMER AND TOOL CO
30 W PINE ST
127
MILLERSBURG
PA
17061
717-692-2372

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Reference Numbers (Part Numbers)

376-11-64X2 3-8

Required Categories

MATERIAL
HARDNESS RATING
CUTTING END STYLE
SHANK STYLE
SHANK DIAMETER
OVERA

Required Description

STEEL OVERALL
40.0 ROCKWELL C MINIMUM AND
53.0 ROCKWELL C MAXIMUM
21 SOLID
7