PartsTable
Technical Data Sheet

AL-5/K21 — CUTTER BIT,TOOL HOLDER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

AL-5/K21: CUTTER BIT,TOOL HOLDER.

The CUTTER BIT,TOOL HOLDER is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, material: CARBIDE, overall_width: 0.312 INCHES NOMINAL IN, overall_length: 2.250 INCHES NOMINAL IN, special_features: LEFT HAND TURNING, unable_to_decode: UNABLE TO DECODE. This part is cataloged in the U.S.

Government catalog under NSN 3455-01-046-5855, 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
AL-5/K21
NSN: 3455-01-046-5855
FSC: 3455 — Cutting Tools for Machine Tools
CAGE: 7W680 — KENNAMETAL INC. DIV CHARLOTTE BUSINESS OFFICE (USA)
SPECIFICATIONS
shapeRECTANGULAR
materialCARBIDE
overall_width0.312 INCHES NOMINAL IN
overall_length2.250 INCHES NOMINAL IN
special_featuresLEFT HAND TURNING
unable_to_decodeUNABLE TO DECODE
material_locationOVERALL
overall_thickness0.312 INCHES NOMINAL IN
cutting_edge_finishUNGROUND
nondefinitive_spec/std_dataAL STYLE AND 5 SIZE AND -5 CLASS
NSN3455-01-046-5855
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUTTER BIT,TOOL HOLDER TITLE COMPONENT PN AL-5/K21 MFR CUTTER BIT,TOOL HOLDER
KEY FEATURES
•
OVERALL THICKNESS: 0.312 INCHES NOMINAL IN
•
SHAPE: RECTANGULAR
•
MATERIAL LOCATION: OVERALL
•
NONDEFINITIVE SPEC/STD DATA: AL STYLE AND 5 SIZE AND -5 CLASS
•
UNABLE TO DECODE: UNABLE TO DECODE
TECHNICAL CHARACTERISTICS
OVERALL THICKNESS0.312 INCHES NOMINAL IN
SHAPERECTANGULAR
OVERALL LENGTH2.250 INCHES NOMINAL IN
OVERALL WIDTH0.312 INCHES NOMINAL IN
MATERIAL LOCATIONOVERALL
NONDEFINITIVE SPEC/STD DATAAL STYLE AND 5 SIZE AND -5 CLASS
UNABLE TO DECODEUNABLE TO DECODE
SPECIAL FEATURESLEFT HAND TURNING
MATERIALCARBIDE
CUTTING EDGE FINISHUNGROUND
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 2
A-A-51143Reference document
Same NSN cross-reference
Reference document — Secondary reference
ANSI B212.12Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AL-5/K21?
AL-5/K21 is a CUTTER BIT,TOOL HOLDER.
What parts can replace AL-5/K21?
There are 2 known substitutes for AL-5/K21: A-A-51143, ANSI B212.12. Substitute compatibility should be verified for your specific system.
What is the NSN for AL-5/K21?
AL-5/K21 is cataloged in the U.S. Government catalog under NSN 3455-01-046-5855. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.