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Technical Data Sheet
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721 3/4IN. — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The CUTTER,MILLING,CONCAVE is a the manufacturer industrial component. Key specifications include bearings: INCLUDED, material: STEEL, bore_type: STRAIGHT, hub_style: STRAIGHT, base_style: SUB-MINIATURE TWO PIN, body_style: STRAIGHT SHAPE, EXTERNAL COUPLING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-254-8474, 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
721 3/4IN.
NSN: 3455-00-254-8474
FSC: 3455
CAGE: 78197 — STANDARD TOOL CO DIV OF LEAR SIEGLER INC (USA)
SPECIFICATIONS
bearingsINCLUDED
materialSTEEL
bore_typeSTRAIGHT
hub_styleSTRAIGHT
base_styleSUB-MINIATURE TWO PIN
body_styleSTRAIGHT SHAPE, EXTERNAL COUPLING
bore_shapeSTRAIGHT
bulb_styleT (TUBULAR)
shell_typeSOLID
design_typeSTAMPED DISK
bearing_typeBALL
thread_class2A A
NSN3455-00-254-8474
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CUTTER,MILLING,CONCAVE TITLE COMPONENT PN 721 3/4IN. MFR CUTTER,MILLING,CONCAVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
9-109Interchangeable
interchangeable cross-reference
interchangeable
3149Interchangeable
interchangeable cross-reference
interchangeable
53109Interchangeable
interchangeable cross-reference
interchangeable
40-484Interchangeable
interchangeable cross-reference
interchangeable
D779Interchangeable
interchangeable cross-reference
interchangeable
D779SUB1PT2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 721 3/4IN.?
721 3/4IN. is a CUTTER,MILLING,CONCAVE.
What parts can replace 721 3/4IN.?
There are 31 known substitutes for 721 3/4IN.: 9-109, 3149, 53109 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 721 3/4IN.?
721 3/4IN. is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-254-8474. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: September 2026