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C7856-12D — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

C7856-12D: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, thread_class: 3A FIRST END BULKHEAD A, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: SWAGED W/ GROOVES (TUBE) ALL ENDS, special_features: POLYTETRAFLUOROETHYLENE COAT BOTH ENDS INTERNALLY 0.423 IN. FROM THE END IN, style_designator: SWAGED ENDS W/BULKHEAD.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-052-0776, 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
C7856-12D
NSN: 4730-01-052-0776
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
thread_class3A FIRST END BULKHEAD A
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleSWAGED W/ GROOVES (TUBE) ALL ENDS
special_featuresPOLYTETRAFLUOROETHYLENE COAT BOTH ENDS INTERNALLY 0.423 IN. FROM THE END IN
style_designatorSWAGED ENDS W/BULKHEAD
surface_treatmentPLASTIC POLYTETRAFLUOROETHYLENE OUTSIDE
nominal_thread_size1.062 INCHES FIRST END BULKHEAD IN
nominal_overall_length5.393 INCHES IN
thread_quantity_per_inch12 FIRST END BULKHEAD
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST END BULKHEAD
material_document_and_classificationQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-01-052-0776
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: C7856-12D · 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: SWAGED W/ GROOVES (TUBE) ALL ENDS
•
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.168 INCHES ALL ENDS IN
•
NOMINAL OVERALL LENGTH: 5.393 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END BULKHEAD
•
STYLE DESIGNATOR: SWAGED ENDS W/BULKHEAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLESWAGED W/ GROOVES (TUBE) ALL ENDS
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.168 INCHES ALL ENDS IN
NOMINAL OVERALL LENGTH5.393 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END BULKHEAD
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORSWAGED ENDS W/BULKHEAD
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES ALL ENDS IN
NOMINAL THREAD SIZE1.062 INCHES FIRST END BULKHEAD IN
SPECIAL FEATURESPOLYTETRAFLUOROETHYLENE COAT BOTH ENDS INTERNALLY 0.423 IN. FROM THE END IN
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is C7856-12D?
C7856-12D is a COUPLING,TUBE.
What is the NSN for C7856-12D?
C7856-12D is cataloged in the U.S. Government catalog under NSN 4730-01-052-0776. 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.