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ST646 — REAMER,HAND

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

ST646: REAMER,HAND.

The REAMER,HAND is a the manufacturer industrial component. Key specifications include flute_design: STRAIGHT, overall_length: 12.000 INCHES NOMINAL IN, functional_description: USED TO REAM INSIDE DIAMETER OF VALVE GUIDES, end_item_identification: CUMMINS SERIES NT, V28 AND V903 ENGINES. This part is cataloged in the U.S.

Government catalog under NSN 5110-00-980-7347, 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
ST646
NSN: 5110-00-980-7347
FSC: 5110 — Hand Tools, Edged, Nonpowered
CAGE: 0B8S3 — CUMMINS INC (USA)
SPECIFICATIONS
flute_designSTRAIGHT
overall_length12.000 INCHES NOMINAL IN
functional_descriptionUSED TO REAM INSIDE DIAMETER OF VALVE GUIDES
end_item_identificationCUMMINS SERIES NT, V28 AND V903 ENGINES
NSN5110-00-980-7347
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REAMER,HAND TITLE COMPONENT PN ST646 MFR REAMER,HAND
KEY FEATURES
•
FLUTE DESIGN: STRAIGHT
•
FUNCTIONAL DESCRIPTION: USED TO REAM INSIDE DIAMETER OF VALVE GUIDES
TECHNICAL CHARACTERISTICS
FLUTE DESIGNSTRAIGHT
OVERALL LENGTH12.000 INCHES NOMINAL IN
FUNCTIONAL DESCRIPTIONUSED TO REAM INSIDE DIAMETER OF VALVE GUIDES
END ITEM IDENTIFICATIONCUMMINS SERIES NT, V28 AND V903 ENGINES
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 ST646?
ST646 is a REAMER,HAND.
What is the NSN for ST646?
ST646 is cataloged in the U.S. Government catalog under NSN 5110-00-980-7347. 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.