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77AE4 — COUPLING,CLAMP,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

77AE4: COUPLING,CLAMP,PIPE.

The COUPLING,CLAMP,PIPE is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC GASKET, special_features: W/BOLTS AND NUTS ZINC ELECTROPLATED, pipe_size_accommodated: 4.000 INCHES NOMINAL IN, working_pressure_rating: 1000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, end_type_for_which_designed: GROOVED, tube_outside_diameter_for_which_designed: 4.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-177-5166, 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
77AE4
NSN: 4730-01-177-5166
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79154 — VICTAULIC COMPANY OF AMERICA INC DBA VICTAULIC COMPANY OF AMERICA (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC GASKET
segment_quantity2
special_featuresW/BOLTS AND NUTS ZINC ELECTROPLATED
pipe_size_accommodated4.000 INCHES NOMINAL IN
working_pressure_rating1000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
end_type_for_which_designedGROOVED
material_document_and_classificationQQ-A-596, ALLOY 356, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/2, ALLOY 3003 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE HOUSING
tube_outside_diameter_for_which_designed4.500 INCHES NOMINAL IN
NSN4730-01-177-5166
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 77AE4 · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 4.500 INCHES NOMINAL IN
•
PIPE SIZE ACCOMMODATED: 4.000 INCHES NOMINAL IN
•
END TYPE FOR WHICH DESIGNED: GROOVED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-596, ALLOY 356, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/2, ALLOY 3003 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE HOUSING
•
WORKING PRESSURE RATING: 1000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
SEGMENT QUANTITY: 2
•
MATERIAL: RUBBER SYNTHETIC GASKET
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED4.500 INCHES NOMINAL IN
PIPE SIZE ACCOMMODATED4.000 INCHES NOMINAL IN
END TYPE FOR WHICH DESIGNEDGROOVED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-596, ALLOY 356, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/2, ALLOY 3003 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE HOUSING
WORKING PRESSURE RATING1000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
SPECIAL FEATURESW/BOLTS AND NUTS ZINC ELECTROPLATED
SEGMENT QUANTITY2
MATERIALRUBBER SYNTHETIC GASKET
MATERIALALUMINUM ALLOY 356.0 OR ALUMINUM ALLOY 3003 OR ALUMINUM ALLOY 6061 HOUSING
SUBSTITUTES & CROSS-REFERENCES 4
AA52598-A-09Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A-A-52598Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-C-10387Reference document
Same NSN cross-reference
Reference document — Secondary reference
M10387-1-D-09Reference 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 77AE4?
77AE4 is a COUPLING,CLAMP,PIPE.
What parts can replace 77AE4?
There are 4 known substitutes for 77AE4: AA52598-A-09, A-A-52598, MIL-C-10387 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77AE4?
77AE4 is cataloged in the U.S. Government catalog under NSN 4730-01-177-5166. 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.