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Technical Data Sheet
927B329 ✓ 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

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, drive_type: RAISED RIB, design_type: THREADED, thread_class: 2A A, overall_diameter: 0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN, special_features: INCLUDES 0.040 TO 0.080 IN. VENT HOLE LOCATED WITHIN 0.062 IN.

OF CENTER 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 5340-00-443-5915, 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
927B329
NSN: 5340-00-443-5915
FSC: 5340
CAGE: 10639 — AVIONICS SPECIALTIES, INC. (USA)
SPECIFICATIONS
materialPLASTIC
drive_typeRAISED RIB
design_typeTHREADED
thread_class2A A
overall_diameter0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
special_featuresINCLUDES 0.040 TO 0.080 IN. VENT HOLE LOCATED WITHIN 0.062 IN. OF CENTER IN
features_providedBEVELED SEAT
thread_size_and_series/type_designator5/16-18 UNIFIED NATIONAL COARSE (UNC)
NSN5340-00-443-5915
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 927B329 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
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 5/16-18 UNIFIED NATIONAL COARSE (UNC)
DESIGN TYPE: THREADED
MATERIAL: PLASTIC
DRIVE TYPE: RAISED RIB
FEATURES PROVIDED: BEVELED SEAT
OVERALL DIAMETER: 0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR5/16-18 UNIFIED NATIONAL COARSE (UNC)
DESIGN TYPETHREADED
MATERIALPLASTIC
DRIVE TYPERAISED RIB
FEATURES PROVIDEDBEVELED SEAT
SPECIAL FEATURESINCLUDES 0.040 TO 0.080 IN. VENT HOLE LOCATED WITHIN 0.062 IN. OF CENTER IN
OVERALL DIAMETER0.790 INCHES MINIMUM AND 0.830 INCHES MAXIMUM IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
B563Interchangeable
interchangeable cross-reference
interchangeable
A1095-8Interchangeable
interchangeable cross-reference
interchangeable
B74Interchangeable
interchangeable cross-reference
interchangeable
1S0506-3Interchangeable
interchangeable cross-reference
interchangeable
APGN-66-29863-1Interchangeable
interchangeable cross-reference
interchangeable
IUGN66-29863-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 927B329?
927B329 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace 927B329?
There are 6 known substitutes for 927B329: B563, A1095-8, B74 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 927B329?
927B329 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-443-5915. This indicates validated use in U.S. government and defense supply chains.
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