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H3-66 — CAP,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

H3-66: CAP,QUICK DISCONNECT.

The CAP,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, overall_length: 1.688 INCHES NOMINAL IN, special_features: WEAPON SYSTEM ESSENTIAL, operating_pressure: 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, quick_disconnect_method: PUSH-LOCK, media_for_which_designed: AIR AND GAS AND WATER. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-929-5677, 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
H3-66
NSN: 4730-00-929-5677
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 97111 — PARKER-HANNIFIN CORPORATION DIV QUICK COUPLING DIVISION (USA)
SPECIFICATIONS
materialSTEEL BODY
overall_length1.688 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
operating_pressure2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
quick_disconnect_methodPUSH-LOCK
media_for_which_designedAIR AND GAS AND WATER
quick_disconnect_nominal_size0.375 INCHES IN
criticality_code_justificationFEAT
NSN4730-00-929-5677
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: H3-66 · 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
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
OPERATING PRESSURE: 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
QUICK DISCONNECT NOMINAL SIZE: 0.375 INCHES IN
•
MEDIA FOR WHICH DESIGNED: AIR AND GAS AND WATER
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONFEAT
OVERALL LENGTH1.688 INCHES NOMINAL IN
OPERATING PRESSURE2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
QUICK DISCONNECT NOMINAL SIZE0.375 INCHES IN
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
MEDIA FOR WHICH DESIGNEDAIR AND GAS AND WATER
END ITEM IDENTIFICATIONSTRATEGIC WEAPON SYSTEMS (POSEIDON AND TRIDENT). F100 PW220 AIRCRAFT ENGIEN. (F-15C/D/E). B-52 AIRCRAFT SUPPORT EQUIPMENT. ADCAP 48 TORPEDO. F-106 AIRCRAFT SUPPORT EQUIPMENT. LGM-30 MINUTEMAN MISSLE. MK 48 TORPEDO. MK 46 TORPEDO SYSTEMS.
MATERIALSTEEL BODY
QUICK DISCONNECT METHODPUSH-LOCK
SUBSTITUTES & CROSS-REFERENCES 3
PDC-3-HKSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4730PL1792049Reference document
Same NSN cross-reference
Reference document — Informative reference only
791815Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H3-66?
H3-66 is a CAP,QUICK DISCONNECT.
What parts can replace H3-66?
There are 3 known substitutes for H3-66: PDC-3-HK, 4730PL1792049, 791815. Substitute compatibility should be verified for your specific system.
What is the NSN for H3-66?
H3-66 is cataloged in the U.S. Government catalog under NSN 4730-00-929-5677. 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.