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S77N4-4M — COUPLING ASSEMBLY,QUICK DISCONNE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

S77N4-4M: COUPLING ASSEMBLY,QUICK DISCONNE.

COUPLING ASSEMBLY,QUICK DISCONNE. Key specifications include material: STEEL AND STEEL STAINLESS - USE STB000 OVERALL, surface_treatment: NICKEL OVERALL, operating_pressure: 36000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, media_for_which_designed: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE, part_name_assigned_by_controlling_agency: 77 SERIES QUICK DISCONNECT SET. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-588-6427, 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
S77N4-4M
NSN: 4730-01-588-6427
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78357 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV QUICK COUPLER DIVISION (USA)
SPECIFICATIONS
materialSTEEL AND STEEL STAINLESS - USE STB000 OVERALL
surface_treatmentNICKEL OVERALL
operating_pressure36000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
media_for_which_designedHYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
part_name_assigned_by_controlling_agency77 SERIES QUICK DISCONNECT SET
NSN4730-01-588-6427
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S77N4-4M · 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
•
OPERATING PRESSURE: 36000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SURFACE TREATMENT: NICKEL OVERALL
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
•
MATERIAL: STEEL AND STEEL STAINLESS - USE STB000 OVERALL
TECHNICAL CHARACTERISTICS
OPERATING PRESSURE36000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SURFACE TREATMENTNICKEL OVERALL
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, PETROLEUM BASE SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCY77 SERIES QUICK DISCONNECT SET
MATERIALSTEEL AND STEEL STAINLESS - USE STB000 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

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 S77N4-4M?
S77N4-4M is a COUPLING ASSEMBLY,QUICK DISCONNE.
What is the NSN for S77N4-4M?
S77N4-4M is cataloged in the U.S. Government catalog under NSN 4730-01-588-6427. 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.