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1UH631 ✓ Verified by PartsTable
— · MOTOR
WHAT YOU NEED TO KNOW
NEMA frame determines mounting bolt pattern TEFC for outdoor, ODP for dry indoor only
C-face vs foot-mount — different mounting
PRODUCT OVERVIEW

The 1UH631 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-00-635-5378, 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
1UH631
NSN: 6105-00-635-5378
FSC: 6105
CAGE: 79500 — WESTINGHOUSE ELECTRIC CORP (USA)
SPECIFICATIONS
Part Number1UH631
NSN6105-00-635-5378
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 1UH631 · OEM ⚠ VERIFY BEFORE ORDERING NEMA frame size determines mounting bolt pattern — not interchangeable. 56C ≠ 143T bolt pattern. C-face vs foot-mount vs flange — different mounting, same HP doesn't mean drop-in ✓ BROKER TIP TEFC = outdoor/washdown OK. ODP = dry indoor only. TENV = no external fan, explosion-proof areas. 1750 RPM = 4-pole (most common), 3450 RPM = 2-pole, 1150 RPM = 6-pole PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 1.7500 INCHES NOMINAL IDENTICAL ENDS IN
•
LENGTH OF SHAFT FROM HOUSING: 7.000 INCHES SECOND END IN
•
TAPER LENGTH: 5.2500 INCHES NOMINAL IDENTICAL ENDS IN
•
DUTY CYCLE: CONTINUOUS
•
POWER RATING: 100.0000 HORSEPOWER OUTPUT
•
KEYWAY DEPTH: 0.4380 INCHES NOMINAL IDENTICAL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH1.7500 INCHES NOMINAL IDENTICAL ENDS IN
LENGTH OF SHAFT FROM HOUSING7.000 INCHES SECOND END IN
OVERALL LENGTH55.000 INCHES IN
TAPER LENGTH5.2500 INCHES NOMINAL IDENTICAL ENDS IN
DUTY CYCLECONTINUOUS
POWER RATING100.0000 HORSEPOWER OUTPUT
KEYWAY DEPTH0.4380 INCHES NOMINAL IDENTICAL ENDS IN
LENGTH OF SHAFT FROM HOUSING7.000 INCHES FIRST END IN
TEMP RATING50.0 AMBIENT CELSIUS AND 40.0 OPERATING CELSIUS
SHAFT DIAMETER3.6250 INCHES NOMINAL IDENTICAL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
S374P818G01Interchangeable
interchangeable cross-reference
interchangeable
S01782861Interchangeable
interchangeable cross-reference
interchangeable
F4788Interchangeable
interchangeable cross-reference
interchangeable
MILM17413SERVICEAInterchangeable
interchangeable cross-reference
interchangeable
SSL10-408Interchangeable
interchangeable cross-reference
interchangeable
3B7721Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1UH631?
1UH631 is a 1UH631.
What parts can replace 1UH631?
There are 16 known substitutes for 1UH631: S374P818G01, S01782861, F4788 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1UH631?
1UH631 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-00-635-5378. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026