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PartsTable / COMPONENT / P10323
P10323 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

CAP-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: STEEL CORROSION RESISTING NUT, nut_style: HEXAGON, nut_height: 0.188 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-290-7249, 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
P10323
NSN: 5340-00-290-7249
FSC: 5340
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING NUT
nut_styleHEXAGON
nut_height0.188 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES MINIMUM NUT
surface_treatmentPASSIVATE OVERALL EXCEPT INSERT
width_across_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
NSN5340-00-290-7249
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P10323 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH UNDER SHOULDER: 0.875 INCHES NOMINAL IN
•
CLOSED END OVERALL DIAMETER: 1.312 INCHES NOMINAL IN
•
OPEN END INSIDE DIAMETER: 1.402 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH UNDER SHOULDER0.875 INCHES NOMINAL IN
CLOSED END OVERALL DIAMETER1.312 INCHES NOMINAL IN
OPEN END INSIDE DIAMETER1.402 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
MILC52078Upgraded Successor
successor cross-reference
successor
22SUpgraded Successor
successor cross-reference
successor
M5501/7-F38Upgraded Successor
successor cross-reference
successor
M5501/1-R6Upgraded Successor
successor cross-reference
successor
MILC5501Upgraded Successor
successor cross-reference
successor
MIL-C-5501/1Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is P10323?
P10323 is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace P10323?
There are 31 known substitutes for P10323: MILC52078, 22S, M5501/7-F38 and 28 more. Substitute compatibility should be verified for your specific system.
Is P10323 still available?
P10323 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026