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Technical Data Sheet
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50256REVB ✓ 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 EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include body_width: 3.625 INCHES NOMINAL IN, body_height: 4.000 INCHES NOMINAL IN, body_length: 3.875 INCHES NOMINAL IN, inclosure_type: OPEN, mounting_method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP, drive_shaft_type: MACHINE KEYWAY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-432-3874, 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
50256REVB
NSN: 4730-01-432-3874
FSC: 4730
CAGE: 30009 — HYSPAN PRECISION PRODUCTS, INC. DBA HYSPAN PRECISION PRODUCTS INC (USA)
SPECIFICATIONS
body_width3.625 INCHES NOMINAL IN
body_height4.000 INCHES NOMINAL IN
body_length3.875 INCHES NOMINAL IN
inclosure_typeOPEN
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
drive_shaft_typeMACHINE KEYWAY
frequency_rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT
operation_methodPOWERED
special_featuresNUMBER 2 OUTLET @PORT 45 DEG CW FROM INLET
drive_shaft_length1.940 INCHES NOMINAL IN
rotary_pump_designVANE
reliability_indicatorNOT ESTABLISHED
NSN4730-01-432-3874
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 50256REVB · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
BX-9409Interchangeable
interchangeable cross-reference
interchangeable
K6271Interchangeable
interchangeable cross-reference
interchangeable
BC2950Interchangeable
interchangeable cross-reference
interchangeable
50256Interchangeable
interchangeable cross-reference
interchangeable
4525V50A21-1CC10Interchangeable
interchangeable cross-reference
interchangeable
65084Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50256REVB?
50256REVB is a EXPANSION JOINT,PIPE.
What parts can replace 50256REVB?
There are 6 known substitutes for 50256REVB: BX-9409, K6271, BC2950 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 50256REVB?
50256REVB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-432-3874. 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