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Technical Data Sheet
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633-D — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

633-D: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, connection_type: THREADED INTERNAL PIPE FIRST QUICK DISCONNECT END, part_name_assigned_by_controlling_agency: COUPLER - FEMALE NPT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-054-6226, 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
633-D
NSN: 4730-00-054-6226
NIINs: 000546226, 000792451, 011352988, 015604808
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
connection_typeTHREADED INTERNAL PIPE FIRST QUICK DISCONNECT END
part_name_assigned_by_controlling_agencyCOUPLER - FEMALE NPT
NSN4730-00-054-6226
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633-D · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
QUICK DISCONNECT NOMINAL SIZE: 4.703 INCHES ALL ENDS IN
•
LEG LENGTH: 1.562 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 4.000 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 96906-MS27024 GOVERNMENT STANDARD
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH3.687 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN
QUICK DISCONNECT NOMINAL SIZE4.703 INCHES ALL ENDS IN
LEG LENGTH1.562 INCHES NOMINAL IN
NOMINAL THREAD SIZE4.000 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA96906-MS27024 GOVERNMENT STANDARD
MATERIALCOPPER ALLOY BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 9
633D-4BRReference document
Same NSN cross-reference
Reference document — Secondary reference
633-D-4IN-BRReference document
Same NSN cross-reference
Reference document — Secondary reference
400-D-BRReference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-59326/SReference document
Same NSN cross-reference
Reference document — Secondary reference
AA59326V29Reference document
Same NSN cross-reference
Reference document — Secondary reference
AA59326/5-9-B-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 633-D?
633-D is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633-D?
There are 9 known substitutes for 633-D: 633D-4BR, 633-D-4IN-BR, 400-D-BR and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633-D?
633-D is cataloged in the U.S. Government catalog under NSN 4730-00-054-6226. 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.