National Item Identification Number

01-051-5826
010515826
5133-01-051-5826
5133010515826

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)

---

1NEX4

---

KENNAMETAL INC.
DBA KENNAMETAL INDUSTRIAL PRODUCTS
470 OLD EVANS RD
EVANS
GA
30809
703-256-1500

---

71485

---

UNION BUTTERFIELD CORP
P O BOX 9000 CRYSTAL LAKE IL 60039
2300 GLOBAL WAY
HEBRON
KY
41048
859-000-1111

---

71485

---

UNION BUTTERFIELD CORP
P O BOX 9000 CRYSTAL LAKE IL 60039
2300 GLOBAL WAY
HEBRON
KY
41048
859-000-1111

---

Reference Numbers (Part Numbers)

C3000-0625
3000-0625
3230
4702
50712
62-10043
879

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
22 INTERCHA