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Technical Data Sheet
PartsTable / COMPONENT / 156/9
156/9 ✓ 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 156/9 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-555-8204, 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
156/9
NSN: 4730-00-555-8204
FSC: 4730
CAGE: K7018 — WELLMAN GROUP (GBR)
SPECIFICATIONS
Part Number156/9
NSN4730-00-555-8204
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 156/9 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
SURFACE TREATMENT: ANODIZE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
WIDTH ACROSS FLATS: 1.000 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.625 INCHES IN
•
THREAD SERIES: UNF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
MATERIALALUMINUM ALLOY OVERALL
SURFACE TREATMENTANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
END ITEM IDENTIFICATIONCH-47 HELICOPTER
NOMINAL TUBE OUTSIDE DIAMETER0.625 INCHES IN
THREAD SERIESUNF
NOMINAL THREAD SIZE0.875 INCHES IN
SMALLEST INSIDE DIAMETER0.690 INCHES MINIMUM AND 0.695 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1569Interchangeable
interchangeable cross-reference
interchangeable
C5NN-7B155-AInterchangeable
interchangeable cross-reference
interchangeable
201569Interchangeable
interchangeable cross-reference
interchangeable
HP3400Interchangeable
interchangeable cross-reference
interchangeable
MS51800-5Interchangeable
interchangeable cross-reference
interchangeable
DWG5120-00-239-0035Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 156/9?
156/9 is a 156/9.
What parts can replace 156/9?
There are 19 known substitutes for 156/9: 1569, C5NN-7B155-A, 201569 and 16 more. Substitute compatibility should be verified for your specific system.
Is 156/9 still available?
156/9 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026