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VHN4-4-57V — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

VHN4-4-57V: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, leg_length: 1.050 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN, seat_angle: 37.0 DEGREES, thread_class: 3A ALL ENDS A, overall_length: 2.516 INCHES MINIMUM AND 2.531 INCHES MAXIMUM IN, connection_type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-052-0191, 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
VHN4-4-57V
NSN: 4730-01-052-0191
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78357 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV QUICK COUPLER DIVISION (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length1.050 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN
seat_angle37.0 DEGREES
thread_class3A ALL ENDS A
overall_length2.516 INCHES MINIMUM AND 2.531 INCHES MAXIMUM IN
connection_typeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
connection_styleFLARED ALL ENDS
special_featuresVITON SEAL,BULKHEAD THD LOCATED ON FLUID @CONNECTION END
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentCADMIUM BODY
nominal_thread_size0.438 INCHES ALL ENDS IN
NSN4730-01-052-0191
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: VHN4-4-57V · 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
•
CONNECTION STYLE: FLARED ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 1.050 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN
•
FEATURES PROVIDED: SELF-SEALING
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH2.516 INCHES MINIMUM AND 2.531 INCHES MAXIMUM IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH1.050 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN
FEATURES PROVIDEDSELF-SEALING
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SEAT ANGLE37.0 DEGREES
SUBSTITUTES & CROSS-REFERENCES 2
UA1555-9Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
UA1555Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is VHN4-4-57V?
VHN4-4-57V is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace VHN4-4-57V?
There are 2 known substitutes for VHN4-4-57V: UA1555-9, UA1555. Substitute compatibility should be verified for your specific system.
What is the NSN for VHN4-4-57V?
VHN4-4-57V is cataloged in the U.S. Government catalog under NSN 4730-01-052-0191. This indicates validated use in U.S. government and defense supply chains.
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