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A79877 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A79877: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, connection_type: UNTHREADED EXTERNAL TUBE ALL ENDS, connection_style: GROOVED (TUBE) ALL ENDS, style_designator: GROOVED BOTH ENDS, surface_treatment: PASSIVATE OVERALL, nominal_overall_length: 0.795 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-361-6380, 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
A79877
NSN: 4730-01-361-6380
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 94697 — MOOG INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
connection_typeUNTHREADED EXTERNAL TUBE ALL ENDS
connection_styleGROOVED (TUBE) ALL ENDS
style_designatorGROOVED BOTH ENDS
surface_treatmentPASSIVATE OVERALL
nominal_overall_length0.795 INCHES IN
material_document_and_classificationAMS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.501 INCHES ALL ENDS IN
NSN4730-01-361-6380
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A79877 · 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: GROOVED (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 0.795 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: GROOVED BOTH ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.501 INCHES ALL ENDS IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEGROOVED (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH0.795 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL TUBE ALL ENDS
STYLE DESIGNATORGROOVED BOTH ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.501 INCHES ALL ENDS IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
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
A79877-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 A79877?
A79877 is a COUPLING,TUBE.
What parts can replace A79877?
There is 1 known substitute for A79877: A79877-1. Substitute compatibility should be verified for your specific system.
What is the NSN for A79877?
A79877 is cataloged in the U.S. Government catalog under NSN 4730-01-361-6380. 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.