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20D501-4 — 20D501-4

✓ Government record, cited
— · MOTOR
PRODUCT OVERVIEW

20D501-4: 20D501-4.

The 20D501-4 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 6105-00-329-4012, 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
20D501-4
NSN: 6105-00-329-4012
FSC: 6105 — Motors, Electrical
CAGE: 3BMV1 — FIRSTMARK AEROSPACE CORP (USA)
SPECIFICATIONS
Part Number20D501-4
NSN6105-00-329-4012
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 20D501-4 · 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
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 CLAMP COLLAR
•
SPLINE MINOR DIAMETER: 0.0830 INCHES NOMINAL SINGLE END IN
•
PHASE: SINGLE INPUT
•
SHAFT DIAMETER: 0.1250 INCHES NOMINAL SINGLE END IN
•
FREQUENCY IN HERTZ: 400.0 INPUT
•
CURRENT TYPE: AC INPUT
•
CALIBRATION SPEED IN RPM: 1000.0
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY TYPE AND QUANTITY1 CLAMP COLLAR
SPLINE MINOR DIAMETER0.0830 INCHES NOMINAL SINGLE END IN
PHASESINGLE INPUT
SHAFT DIAMETER0.1250 INCHES NOMINAL SINGLE END IN
FREQUENCY IN HERTZ400.0 INPUT
CURRENT TYPEAC INPUT
OVERALL LENGTH2.470 INCHES IN
CALIBRATION SPEED IN RPM1000.0
MOUNTING METHODCLAMP RING(S)
SPLINE LENGTH0.2180 INCHES NOMINAL SINGLE END 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
A203420-13-2-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
1775310-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
A2794410160Reference 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 20D501-4?
20D501-4 is a 20D501-4.
What parts can replace 20D501-4?
There are 3 known substitutes for 20D501-4: A203420-13-2-3, 1775310-3, A2794410160. Substitute compatibility should be verified for your specific system.
What is the NSN for 20D501-4?
20D501-4 is cataloged in the U.S. Government catalog under NSN 6105-00-329-4012. This indicates validated use in U.S. government and defense supply chains.
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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.