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Technical Data Sheet
PartsTable / COMPONENT / 81P-300-A-16M
81P-300-A-16M ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

SYNCHRO,DIFFERENTIAL TRANSMITTER. Key specifications include body_style: STANDARD ROUND A, shaft_type: ROUND, SLOTTED SINGLE SHAFT, pilot_length: 0.0370 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN, shaft_length: 0.4000 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM SINGLE SHAFT IN, overall_length: 1.6550 INCHES MAXIMUM IN, pilot_diameter: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5990-01-334-4111, 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
81P-300-A-16M
NSN: 5990-01-334-4111
FSC: 5990
CAGE: 06989 — AMERICAN PRECISION INDUSTRIES, INC DIV PORTESCAP US (USA)
SPECIFICATIONS
body_size8
body_styleSTANDARD ROUND A
shaft_typeROUND, SLOTTED SINGLE SHAFT
pilot_length0.0370 INCHES MINIMUM AND 0.0460 INCHES MAXIMUM IN
shaft_length0.4000 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM SINGLE SHAFT IN
overall_length1.6550 INCHES MAXIMUM IN
pilot_diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
shaft_diameter0.1195 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM SINGLE SHAFT IN
undercut_width0.0590 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
flange_diameter0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
flange_thickness0.0590 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
fragility_factorMODERATELY RUGGED
NSN5990-01-334-4111
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SYNCHRO,DIFFERENTIAL TRANSMITTER TITLE COMPONENT PN 81P-300-A-16M MFR SYNCHRO,DIFFERENTIAL T
KEY FEATURES
•
MAXIMUM FUNDAMENTAL NULL VOLTAGE IN MILLIVOLTS PER VOLT: 20.00 OUTPUT
•
STATOR INPUT CURRENT RATING: 19.4 MILLIAMPERES MAXIMUM
•
PHASE SHIFT ANGLE IN DEG: 8.500 INPUT TO OUTPUT MAXIMUM
•
STATOR DC RESISTANCE IN OHMS: 290.00 MAXIMUM
•
SHAFT SLOT DEPTH: 0.0250 INCHES NOMINAL SINGLE SHAFT IN
•
ZSO RESISTANCE IN OHMS: 248.00 MINIMUM
•
MOUNTING SURFACE TO TERMINAL END DISTANCE: 1.2400 INCHES MAXIMUM IN
•
TERMINAL LOCATION: REAR
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM FUNDAMENTAL NULL VOLTAGE IN MILLIVOLTS PER VOLT20.00 OUTPUT
STATOR INPUT CURRENT RATING19.4 MILLIAMPERES MAXIMUM
PHASE SHIFT ANGLE IN DEG8.500 INPUT TO OUTPUT MAXIMUM
STATOR DC RESISTANCE IN OHMS290.00 MAXIMUM
SHAFT SLOT DEPTH0.0250 INCHES NOMINAL SINGLE SHAFT IN
ZSO RESISTANCE IN OHMS248.00 MINIMUM
MOUNTING SURFACE TO TERMINAL END DISTANCE1.2400 INCHES MAXIMUM IN
TERMINAL LOCATIONREAR
FUNCTIONAL DESCRIPTIONSYNCHRO POTENTIOMETER
SHAFT END PLAY DETERMINING WEIGHT8.0 OUNCES OZ
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
302D131 PIECE 20Interchangeable
interchangeable cross-reference
interchangeable
355-170-002Interchangeable
interchangeable cross-reference
interchangeable
SS50Interchangeable
interchangeable cross-reference
interchangeable
929024-6Interchangeable
interchangeable cross-reference
interchangeable
902006Interchangeable
interchangeable cross-reference
interchangeable
H19020-06Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81P-300-A-16M?
81P-300-A-16M is a SYNCHRO,DIFFERENTIAL TRANSMITTER.
What parts can replace 81P-300-A-16M?
There are 7 known substitutes for 81P-300-A-16M: 302D131 PIECE 20, 355-170-002, SS50 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81P-300-A-16M?
81P-300-A-16M is cataloged in the Federal Logistics Information System (FLIS) under NSN 5990-01-334-4111. 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