PartsTable
Technical Data Sheet

AA59326/1-2-B — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AA59326/1-2-B: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, overall_length: 1.563 INCHES NOMINAL IN, connection_type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF, surface_treatment: COPPER ALLOY BODY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-186-0820, 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
AA59326/1-2-B
NSN: 4730-01-186-0820
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
overall_length1.563 INCHES NOMINAL IN
connection_typeTHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentCOPPER ALLOY BODY
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodCAM-LOCKING ALL ENDS
thread_series_designatorNPT ALL ENDS
quick_disconnect_nominal_size0.750 INCHES ALL ENDS IN
material_document_and_classificationQQ-C-390 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE BODY
NSN4730-01-186-0820
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AA59326/1-2-B · 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: PLAIN ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE BODY
•
QUICK DISCONNECT NOMINAL SIZE: 0.750 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626 FED SPEC 2ND MATERIAL RESPONSE BODY
OVERALL LENGTH1.563 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE0.750 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SURFACE TREATMENTCOPPER ALLOY BODY
MATERIALCOPPER ALLOY BODY
SUBSTITUTES & CROSS-REFERENCES 6
633A-.75BRReference document
Same NSN cross-reference
Reference document — Secondary reference
AA59326I22Reference document
Same NSN cross-reference
Reference document — Secondary reference
633A3-4BRReference document
Same NSN cross-reference
Reference document — Secondary reference
MS27020-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-59326/1Reference document
Same NSN cross-reference
Reference document — Identification reference
75-A-BRReference document
Same NSN cross-reference
Reference document — Secondary reference
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 AA59326/1-2-B?
AA59326/1-2-B is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace AA59326/1-2-B?
There are 6 known substitutes for AA59326/1-2-B: 633A-.75BR, AA59326I22, 633A3-4BR and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AA59326/1-2-B?
AA59326/1-2-B is cataloged in the U.S. Government catalog under NSN 4730-01-186-0820. 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.