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72978 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

72978: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include thread_class: 1/4"-36UNS-2A A, overall_length: 17.9 MILLIMETERS NOMINAL MM, special_features: DC-4GHZ, IMPEDANCE:50, WORKING VOLTAGE:500, BODY MAT: MACHINED BRASS GHz, nominal_thread_size: 0.250 INCHES IN, operating_temp_rating: 165.0 CELSIUS MAXIMUM DEGC, thread_series_designator: UNS. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-803-7208, 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
72978
NSN: 5331-00-803-7208
NIINs: 008037208, 016202857
FSC: 5331 — O-ring
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
thread_class1/4"-36UNS-2A A
overall_length17.9 MILLIMETERS NOMINAL MM
special_featuresDC-4GHZ, IMPEDANCE:50, WORKING VOLTAGE:500, BODY MAT: MACHINED BRASS GHz
nominal_thread_size0.250 INCHES IN
operating_temp_rating165.0 CELSIUS MAXIMUM DEGC
thread_series_designatorUNS
part_name_assigned_by_controlling_agencyCONNECTOR
NSN5331-00-803-7208
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 72978 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
SUBSTITUTES & CROSS-REFERENCES 9
5330008037208Reference document
Same NSN cross-reference
Reference document — Informative reference only
GHN10093-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
19A11C02Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
S2609-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS28778-2ESReference document
Same NSN cross-reference
Reference document — Secondary reference
MS28778-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 72978?
72978 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 72978?
There are 9 known substitutes for 72978: 5330008037208, GHN10093-4, 19A11C02 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 72978?
72978 is cataloged in the U.S. Government catalog under NSN 5331-00-803-7208. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.