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821C-72 — CUTTER,MILLING,INVOLUTE GEAR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

821C-72: CUTTER,MILLING,INVOLUTE GEAR.

The CUTTER,MILLING,INVOLUTE GEAR is a the manufacturer industrial component. Key specifications include diameter: 0.281 INCHES NOMINAL IN, material: STEEL, thickness: 0.500 INCHES NOMINAL IN, cut_length: 0.562 INCHES NOMINAL IN, drive_type: SHANK, face_width: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3455-00-239-5478, 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
821C-72
NSN: 3455-00-239-5478
FSC: 3455 — Cutting Tools for Machine Tools
CAGE: 09058 — BROWN & SHARPE, INC. DIV PRECISION MEASURING INSTRUMENTS, TESA USA (USA)
SPECIFICATIONS
diameter0.281 INCHES NOMINAL IN
materialSTEEL
thickness0.500 INCHES NOMINAL IN
cut_length0.562 INCHES NOMINAL IN
drive_typeSHANK
face_width0.375 INCHES NOMINAL IN
shank_typeWELDON
tooth_typeINTEGRAL
cutter_typeFINISHING
design_formDOUBLE END
design_typeRANGE
angle_in_deg45.000
NSN3455-00-239-5478
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUTTER,MILLING,INVOLUTE GEAR TITLE COMPONENT PN 821C-72 MFR CUTTER,MILLING,INVOLUT
SUBSTITUTES & CROSS-REFERENCES 8
INVOLUTE 7-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
735Reference document
Same NSN cross-reference
Reference document — Secondary reference
ASME B94.19Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
7039110Reference document
Same NSN cross-reference
Reference document — Secondary reference
GGG-C-755Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS15701-189Reference document
Same NSN cross-reference
Reference document — Secondary 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 821C-72?
821C-72 is a CUTTER,MILLING,INVOLUTE GEAR.
What parts can replace 821C-72?
There are 8 known substitutes for 821C-72: INVOLUTE 7-5, 735, ASME B94.19 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 821C-72?
821C-72 is cataloged in the U.S. Government catalog under NSN 3455-00-239-5478. 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.