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W3021 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

W3021: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include diameter: 1.125 INCHES NOMINAL IN, end_type: INTERNAL THREAD SECOND END, material: STEEL, thickness: 0.180 INCHES NOMINAL IN, case_style: SQUARE, seal_width: 0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-254-6462, 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
W3021
NSN: 4730-00-254-6462
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 41947 — MUELLER BRASS CO. (USA)
SPECIFICATIONS
diameter1.125 INCHES NOMINAL IN
end_typeINTERNAL THREAD SECOND END
materialSTEEL
thickness0.180 INCHES NOMINAL IN
case_styleSQUARE
seal_width0.438 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
body_length1.281 INCHES NOMINAL IN
bore_diameter0.1248 INCHES MINIMUM AND 0.1253 INCHES MAXIMUM IN
overall_length51.000 INCHES NOMINAL IN
shell_materialSTEEL
insert_materialCERAMIC SINGLE MATING END
outside_diameter0.312 INCHES NOMINAL IN
NSN4730-00-254-6462
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: W3021 · 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
SUBSTITUTES & CROSS-REFERENCES 4
5001-51Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B16.22Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35917-4USame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
11240488-6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is W3021?
W3021 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace W3021?
There are 4 known substitutes for W3021: 5001-51, B16.22, MS35917-4U and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W3021?
W3021 is cataloged in the U.S. Government catalog under NSN 4730-00-254-6462. 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.