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LL3K21143 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

LL3K21143: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include leg_length: 0.880 INCHES NOMINAL IN, overall_length: 1.690 INCHES NOMINAL IN, special_features: VITON SEAL, style_designator: MALE COUPLING HALF, features_provided: SELF-SEALING. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-516-7939, 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
LL3K21143
NSN: 4730-01-516-7939
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
leg_length0.880 INCHES NOMINAL IN
overall_length1.690 INCHES NOMINAL IN
special_featuresVITON SEAL
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
NSN4730-01-516-7939
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LL3K21143 · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
LEG LENGTH: 0.880 INCHES NOMINAL IN
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.690 INCHES NOMINAL IN
LEG LENGTH0.880 INCHES NOMINAL IN
FEATURES PROVIDEDSELF-SEALING
SPECIAL FEATURESVITON SEAL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
FD45-1078-06-06Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is LL3K21143?
LL3K21143 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace LL3K21143?
There is 1 known substitute for LL3K21143: FD45-1078-06-06. Substitute compatibility should be verified for your specific system.
What is the NSN for LL3K21143?
LL3K21143 is cataloged in the U.S. Government catalog under NSN 4730-01-516-7939. 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.