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1021-005 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1021-005: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 0.438 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_class: 3B, thread_series: UNS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-8829, 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
1021-005
NSN: 4730-00-278-8829
NIINs: 002788829, 012184598
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79470 — DANA CORP WEATHERHEAD DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height0.438 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_class3B
thread_seriesUNS
thread_directionRIGHT-HAND
fabrication_methodMACHINED
length_to_shoulder0.250 INCHES NOMINAL IN
width_across_flats0.562 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
end_item_identificationGRUMMAN A-10 AIRCRAFT
NSN4730-00-278-8829
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1021-005 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH TO SHOULDER: 0.250 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.562 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
SEAT ANGLE: 45.00 DEGREES NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: 16 FIGURE
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.250 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.562 INCHES NOMINAL IN
THREAD SERIESUNS
SEAT ANGLE45.00 DEGREES NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA16 FIGURE
NUT HEIGHT0.438 INCHES NOMINAL IN
NUT STYLETUBE COUPLING
SUBSTITUTES & CROSS-REFERENCES 8
SAE-J512Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
5-060110BReference document
Same NSN cross-reference
Reference document — Secondary reference
MS39176-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
0306381Reference document
Same NSN cross-reference
Reference document — Secondary reference
61C-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
61X5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1021-005?
1021-005 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 1021-005?
There are 8 known substitutes for 1021-005: SAE-J512, 5-060110B, MS39176-4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1021-005?
1021-005 is cataloged in the U.S. Government catalog under NSN 4730-00-278-8829. 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.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.