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Technical Data Sheet
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505551-631 — 505551-631

✓ Government record, cited
— · MOTOR
PRODUCT OVERVIEW

505551-631: 505551-631.

The 505551-631 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 6105-01-181-7070, 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
505551-631
NSN: 6105-01-181-7070
FSC: 6105 — Motors, Electrical
CAGE: 75477 — FM AF, LLC DBA AMERICAN FAN COMPANY (USA)
SPECIFICATIONS
Part Number505551-631
NSN6105-01-181-7070
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 505551-631 · 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
•
OVERALL DIAMETER: 11.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.728 INCHES NOMINAL IN
OVERALL DIAMETER11.500 INCHES NOMINAL IN
OTHER ITEMS IN FSC 6105 — Motors, Electrical
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6105-00-001-1471 6105-00-001-1473 6105-00-001-1497 6105-00-001-1710 6105-00-001-1712 6105-00-001-2097 6105-00-001-2098 6105-00-001-3680
SUBSTITUTES & CROSS-REFERENCES 3
1389759-631Reference document
Same NSN cross-reference
Reference document — Secondary reference
1389759-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF12988 PIECE 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 505551-631?
505551-631 is a 505551-631.
What parts can replace 505551-631?
There are 3 known substitutes for 505551-631: 1389759-631, 1389759-1, FF12988 PIECE 4. Substitute compatibility should be verified for your specific system.
What is the NSN for 505551-631?
505551-631 is cataloged in the U.S. Government catalog under NSN 6105-01-181-7070. This indicates validated use in U.S. government and defense supply chains.
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