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ST7M257-275H200 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST7M257-275H200: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 OVERALL, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: SOCKET (TUBE) ALL ENDS, style_designator: PLAIN W/TAPERED ENDS, operating_pressure: 45.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, maximum_operating_temp: 600.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-531-3314, 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
ST7M257-275H200
NSN: 4730-01-531-3314
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 321 OVERALL
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleSOCKET (TUBE) ALL ENDS
style_designatorPLAIN W/TAPERED ENDS
operating_pressure45.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp600.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length2.000 INCHES IN
end_item_identificationE FWD FUSELAGE
material_document_and_classificationMIL-T-8808 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyHOUSING-FLEXIBLE CONNECTOR
nominal_outside_diameter_tube_accommodated2.750 INCHES ALL ENDS IN
NSN4730-01-531-3314
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST7M257-275H200 · 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
•
CONNECTION STYLE: SOCKET (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: PLAIN W/TAPERED ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-8808 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 2.750 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 45.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MAXIMUM OPERATING TEMP: 600.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS
CONNECTION STYLESOCKET (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH2.000 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORPLAIN W/TAPERED ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-8808 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED2.750 INCHES ALL ENDS IN
OPERATING PRESSURE45.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP600.0 FAHRENHEIT SINGLE RESPONSE DEGF
PART NAME ASSIGNED BY CONTROLLING AGENCYHOUSING-FLEXIBLE CONNECTOR
END ITEM IDENTIFICATIONE FWD FUSELAGE
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
10A347-275-200Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST7M257-275H200?
ST7M257-275H200 is a COUPLING,TUBE.
What parts can replace ST7M257-275H200?
There is 1 known substitute for ST7M257-275H200: 10A347-275-200. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M257-275H200?
ST7M257-275H200 is cataloged in the U.S. Government catalog under NSN 4730-01-531-3314. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.