AR-12 K21 — CUTTER BIT,TOOL HOLDER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

AR-12 K21: CUTTER BIT,TOOL HOLDER.

The CUTTER BIT,TOOL HOLDER is a the manufacturer industrial component. Key specifications include material: CARBIDE, edge_type: RIGHT HAND SIDE, overall_width: 0.750 INCHES NOMINAL IN, overall_length: 4.500 INCHES NOMINAL IN, material_location: TIP, overall_thickness: 0.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3455-00-055-2172, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

AR-12 K21

NSN: 3455-00-055-2172
FSC: 3455 — Cutting Tools for Machine Tools
CAGE: 7W680 — KENNAMETAL INC. DIV CHARLOTTE BUSINESS OFFICE (USA)

SPECIFICATIONS

material	CARBIDE
edge_type	RIGHT HAND SIDE
overall_width	0.750 INCHES NOMINAL IN
overall_length	4.500 INCHES NOMINAL IN
material_location	TIP
overall_thickness	0.750 INCHES NOMINAL IN
cutting_edge_finish	GROUND TO SHAPE
material_type_for_which_designed	FERROUS METAL OR NONFERROUS METAL
NSN	3455-00-055-2172

COMPONENT DIAGRAM

KEY FEATURES

•

OVERALL THICKNESS: 0.750 INCHES NOMINAL IN

•

MATERIAL LOCATION: TIP

•

MATERIAL TYPE FOR WHICH DESIGNED: FERROUS METAL OR NONFERROUS METAL

•

EDGE TYPE: RIGHT HAND SIDE

•

MATERIAL: CARBIDE

•

CUTTING EDGE FINISH: GROUND TO SHAPE

TECHNICAL CHARACTERISTICS

OVERALL THICKNESS	0.750 INCHES NOMINAL IN
OVERALL LENGTH	4.500 INCHES NOMINAL IN
OVERALL WIDTH	0.750 INCHES NOMINAL IN
MATERIAL LOCATION	TIP
MATERIAL TYPE FOR WHICH DESIGNED	FERROUS METAL OR NONFERROUS METAL
EDGE TYPE	RIGHT HAND SIDE
MATERIAL	CARBIDE
CUTTING EDGE FINISH	GROUND TO SHAPE

OTHER ITEMS IN FSC 3455 — Cutting Tools for Machine Tools

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3455-00-001-3735 3455-00-001-9401 3455-00-003-8985 3455-00-005-2374 3455-00-005-2377 3455-00-005-2378 3455-00-005-2384 3455-00-005-2385

SUBSTITUTES & CROSS-REFERENCES 1

A-A-51143Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is AR-12 K21?

AR-12 K21 is a CUTTER BIT,TOOL HOLDER.

What parts can replace AR-12 K21?

There is 1 known substitute for AR-12 K21: A-A-51143. Substitute compatibility should be verified for your specific system.

What is the NSN for AR-12 K21?

AR-12 K21 is cataloged in the U.S. Government catalog under NSN 3455-00-055-2172. This indicates validated use in U.S. government and defense supply chains.

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