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7M1257-12R — COUPLING HALF,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7M1257-12R: COUPLING HALF,SELF-SEALING.

The COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, leg_length: 1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, connection_style: FLARED FIRST FLUID END CONNECTION, style_designator: MALE COUPLING HALF, surface_treatment: PASSIVATE BODY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-725-1355, 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
7M1257-12R
NSN: 4730-01-725-1355
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
leg_length1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleFLARED FIRST FLUID END CONNECTION
style_designatorMALE COUPLING HALF
surface_treatmentPASSIVATE BODY
operating_pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE DEGF
end_item_identificationF-15EX
material_document_and_classificationAMS5643 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
part_name_assigned_by_controlling_agencyCOULPING HALF, QUICK DISCONNECT-NIPPLE, SELF-SEALING
NSN4730-01-725-1355
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7M1257-12R · 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: FLARED FIRST FLUID END CONNECTION
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5643 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
•
OPERATING PRESSURE: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
•
MAXIMUM OPERATING TEMP: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
SURFACE TREATMENT: PASSIVATE BODY
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED FIRST FLUID END CONNECTION
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5643 NATIONAL STD SINGLE MATERIAL RESPONSE BODY
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH1.546 INCHES MINIMUM AND 1.578 INCHES MAXIMUM IN
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE DEGF
SURFACE TREATMENTPASSIVATE BODY
PART NAME ASSIGNED BY CONTROLLING AGENCYCOULPING HALF, QUICK DISCONNECT-NIPPLE, SELF-SEALING
END ITEM IDENTIFICATIONF-15EX
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7M1257-12R?
7M1257-12R is a COUPLING HALF,SELF-SEALING.
What is the NSN for 7M1257-12R?
7M1257-12R is cataloged in the U.S. Government catalog under NSN 4730-01-725-1355. This indicates validated use in U.S. government and defense supply chains.
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