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Technical Data Sheet
PartsTable / COMPONENT / WW-V-531-05TA
WW-V-531-05TA ✓ 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 UNION,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY SEAT, seat_type: GROUND-JOINT, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, special_features: USED ON GRUMMAN A10 AIRCRAFT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3907, 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
WW-V-531-05TA
NSN: 4730-00-266-3907
FSC: 4730
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY SEAT
seat_typeGROUND-JOINT
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresUSED ON GRUMMAN A10 AIRCRAFT
style_designatorSCREWED
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
nominal_thread_size1.000 INCHES ALL ENDS IN
coupling_flange_shapeHEXAGON
maximum_operating_temp450.0 FAHRENHEIT SECOND RESPONSE DEGF
nominal_overall_length2.060 INCHES IN
NSN4730-00-266-3907
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: WW-V-531-05TA · 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-I-666 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A47 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ANSI G49.1 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A675 ASSN STD 2ND MATERIAL RESPONSE TAILPIECE
•
STYLE DESIGNATOR: SCREWED
•
REDUCER TYPE: CONCENTRIC
•
COUPLING FLANGE SHAPE: HEXAGON
•
NOMINAL THREAD SIZE: 1.000 INCHES ALL ENDS IN
•
MAXIMUM OPERATING TEMP: 450.0 FAHRENHEIT SECOND RESPONSE DEGF
•
NOMINAL OVERALL LENGTH: 2.060 INCHES IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-I-666 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A47 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ANSI G49.1 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A675 ASSN STD 2ND MATERIAL RESPONSE TAILPIECE
STYLE DESIGNATORSCREWED
REDUCER TYPECONCENTRIC
COUPLING FLANGE SHAPEHEXAGON
NOMINAL THREAD SIZE1.000 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT SECOND RESPONSE DEGF
NOMINAL OVERALL LENGTH2.060 INCHES IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
MAXIMUM OPERATING TEMP450.0 FAHRENHEIT FIRST RESPONSE DEGF
MATERIALCOPPER ALLOY SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
ASME-B16.39Interchangeable
interchangeable cross-reference
interchangeable
ASMEB16.39-02-T-AInterchangeable
interchangeable cross-reference
interchangeable
PT1280Interchangeable
interchangeable cross-reference
interchangeable
PT18Interchangeable
interchangeable cross-reference
interchangeable
A5Interchangeable
interchangeable cross-reference
interchangeable
WWU531-06TAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WW-V-531-05TA?
WW-V-531-05TA is a UNION,PIPE.
What parts can replace WW-V-531-05TA?
There are 23 known substitutes for WW-V-531-05TA: ASME-B16.39, ASMEB16.39-02-T-A, PT1280 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for WW-V-531-05TA?
WW-V-531-05TA is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3907. 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