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PartsTable / COMPONENT / WW-U-351-22TB
WW-U-351-22TB ✓ 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 PRINTED WIRING BOARD is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, seat_type: GROUND-JOINT, reducer_type: CONCENTRIC, connection_style: PLAIN (PIPE) ALL ENDS, special_features: THE OVERALL SURFACE TREATMENT COATING IS BLACK, style_designator: SCREWED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-092-9670, 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-U-351-22TB
NSN: 4730-00-092-9670
FSC: 4730
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialIRON OVERALL
seat_typeGROUND-JOINT
reducer_typeCONCENTRIC
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresTHE OVERALL SURFACE TREATMENT COATING IS BLACK
style_designatorSCREWED
operating_pressure500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.250 INCHES ALL ENDS IN
coupling_flange_shapeHEXAGON
nominal_overall_length1.625 INCHES IN
thread_series_designatorNPT ALL ENDS
nominal_pipe_size_accommodated0.250 INCHES ALL ENDS IN
NSN4730-00-092-9670
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: WW-U-351-22TB · 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
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
MATERIAL: IRON OVERALL
•
OPERATING PRESSURE: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
STYLE DESIGNATOR: SCREWED
•
COUPLING FLANGE SHAPE: HEXAGON
•
SEAT TYPE: GROUND-JOINT
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
MATERIALIRON OVERALL
OPERATING PRESSURE500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIAL FEATURESTHE OVERALL SURFACE TREATMENT COATING IS BLACK
STYLE DESIGNATORSCREWED
COUPLING FLANGE SHAPEHEXAGON
SEAT TYPEGROUND-JOINT
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES ALL ENDS IN
REDUCER TYPECONCENTRIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
51914Interchangeable
interchangeable cross-reference
interchangeable
51709Interchangeable
interchangeable cross-reference
interchangeable
11-1CHC0Interchangeable
interchangeable cross-reference
interchangeable
S511780Interchangeable
interchangeable cross-reference
interchangeable
B16.39Interchangeable
Same NIIN cross-reference
interchangeable
1621-040Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WW-U-351-22TB?
WW-U-351-22TB is a PRINTED WIRING BOARD.
What parts can replace WW-U-351-22TB?
There are 8 known substitutes for WW-U-351-22TB: 51914, 51709, 11-1CHC0 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for WW-U-351-22TB?
WW-U-351-22TB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-092-9670. 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