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6905020-4 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6905020-4: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, thread_class: 2B ALL ENDS, overall_length: 2.120 INCHES NOMINAL IN, connection_type: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: BOSS GASKET SEAL ALL ENDS, special_features: VITON O-RING. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-356-0780, 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
6905020-4
NSN: 4730-01-356-0780
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 09523 — PARKER-HANNIFIN CORPORATION DIV GAS TURBINE FUEL SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL BODY
thread_class2B ALL ENDS
overall_length2.120 INCHES NOMINAL IN
connection_typeTHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleBOSS GASKET SEAL ALL ENDS
special_featuresVITON O-RING
style_designatorMALE COUPLING HALF
nominal_thread_size0.438 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity1 PREFORMED PACKING
NSN4730-01-356-0780
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6905020-4 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 PREFORMED PACKING
•
CONNECTION STYLE: BOSS GASKET SEAL ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 PREFORMED PACKING
CONNECTION STYLEBOSS GASKET SEAL ALL ENDS
CONNECTION TYPETHREADED INTERNAL BOSS FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH2.120 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SPECIAL FEATURESVITON O-RING
THREAD CLASS2B ALL ENDS
MATERIALSTEEL BODY
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
6905020Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6905020-4?
6905020-4 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 6905020-4?
There is 1 known substitute for 6905020-4: 6905020. Substitute compatibility should be verified for your specific system.
What is the NSN for 6905020-4?
6905020-4 is cataloged in the U.S. Government catalog under NSN 4730-01-356-0780. 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.