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PartsTable / COMPONENT / W2T91949
W2T91949 ✓ 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 NUT,UNION is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: UNION NUT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-596-7471, 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
W2T91949
NSN: 4730-01-596-7471
FSC: 4730
CAGE: 89357 — EVOQUA WATER TECHNOLOGIES LLC (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyUNION NUT
NSN4730-01-596-7471
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: W2T91949 · 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
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYUNION NUT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
7901826Interchangeable
interchangeable cross-reference
interchangeable
234A-4Interchangeable
interchangeable cross-reference
interchangeable
599-655-4Interchangeable
interchangeable cross-reference
interchangeable
50975Interchangeable
interchangeable cross-reference
interchangeable
SC-B-69752Interchangeable
interchangeable cross-reference
interchangeable
05-097-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W2T91949?
W2T91949 is a NUT,UNION.
What parts can replace W2T91949?
There are 8 known substitutes for W2T91949: 7901826, 234A-4, 599-655-4 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W2T91949?
W2T91949 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-596-7471. 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