PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1B.250U
1B.250U ✓ 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 1B.250U is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-306-6280, 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
1B.250U
NSN: 4730-01-306-6280
FSC: 4730
CAGE: 87400 — WARD MFG INC (USA)
SPECIFICATIONS
Part Number1B.250U
NSN4730-01-306-6280
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1B.250U · 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
•
OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 1.250 INCHES FIRST END IN
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SINGLE RESPONSE
•
SPECIFICATION/STANDARD DATA: 81348-WW-U-351 GOVERNMENT SPECIFICATION
•
THREAD SERIES DESIGNATOR: NPT SECOND END
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: IRON ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE1.250 INCHES FIRST END IN
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
SPECIFICATION/STANDARD DATA81348-WW-U-351 GOVERNMENT SPECIFICATION
THREAD SERIES DESIGNATORNPT SECOND END
SURFACE TREATMENTZINC OVERALL
MATERIALIRON ALLOY OVERALL
SPECIAL FEATURESWARD CLIMAX BRAND,FIG 92,BRASS TO IRON SEAT
NONDEFINITIVE SPEC/STD DATA2 CLASS AND B TYPE
THREAD SERIES DESIGNATORNPT FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
C5-45-2623-6Interchangeable
interchangeable cross-reference
interchangeable
13218E0476-16Interchangeable
interchangeable cross-reference
interchangeable
179692Interchangeable
interchangeable cross-reference
interchangeable
22U531Interchangeable
interchangeable cross-reference
interchangeable
B16.39Interchangeable
interchangeable cross-reference
interchangeable
WWU531-22TBInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1B.250U?
1B.250U is a 1B.250U.
What parts can replace 1B.250U?
There are 21 known substitutes for 1B.250U: C5-45-2623-6, 13218E0476-16, 179692 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B.250U?
1B.250U is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-306-6280. 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