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1390591 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, duty_cycle: CONTINUOUS, flat_depth: 0.0300 INCHES NOMINAL SINGLE END IN, power_rating: 0.1250 HORSEPOWER OUTPUT, winding_type: SERIES WOUND, overall_width: 2.969 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-727-9145, 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
1390591
NSN: 4730-00-727-9145
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
duty_cycleCONTINUOUS
flat_depth0.0300 INCHES NOMINAL SINGLE END IN
power_rating0.1250 HORSEPOWER OUTPUT
winding_typeSERIES WOUND
overall_width2.969 INCHES IN
cooling_methodNONVENTILATED
overall_height2.969 INCHES IN
overall_length1.281 INCHES NOMINAL IN
shaft_diameter0.312 INCHES NOMINAL SINGLE END IN
connection_typeTHREADED EXTERNAL PIPE FIRST FLUID END CONNECTION
mounting_methodFACE
NSN4730-00-727-9145
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1390591 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-637,COMP 2 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL: COPPER ALLOY BODY
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-637,COMP 2 FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATORMALE COUPLING HALF
MATERIALCOPPER ALLOY BODY
OVERALL LENGTH1.281 INCHES NOMINAL IN
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES ALL ENDS IN
MATING END IDENTIFICATIONE.B.WIGGINS,INC SOCKET PART NO.P1705
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
A-1257Interchangeable
interchangeable cross-reference
interchangeable
BP1706Interchangeable
interchangeable cross-reference
interchangeable
13626-73-1Interchangeable
interchangeable cross-reference
interchangeable
7350349Interchangeable
interchangeable cross-reference
interchangeable
B6532Interchangeable
interchangeable cross-reference
interchangeable
1390591Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1390591?
1390591 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 1390591?
There are 6 known substitutes for 1390591: A-1257, BP1706, 13626-73-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1390591?
1390591 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-727-9145. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026