PartsTable
Technical Data Sheet

633D-3/4BR — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

633D-3/4BR: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, leg_length: 0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, overall_length: 2.125 INCHES NOMINAL IN, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF, nominal_thread_size: 0.750 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-079-2451, 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
633D-3/4BR
NSN: 4730-00-079-2451
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 9H113 — DOVER RESOURCES INC DBA OPW ENGINEERED SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
leg_length0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
overall_length2.125 INCHES NOMINAL IN
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodCAM-LOCKING ALL ENDS
thread_series_designatorNPT ALL ENDS
specification/standard_data96906-MS27024 GOVERNMENT STANDARD
quick_disconnect_nominal_size1.250 INCHES ALL ENDS IN
material_document_and_classificationQQ-C-390 ALLOY 865 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES BODY
NSN4730-00-079-2451
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633D-3/4BR · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390 ALLOY 865 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES BODY
•
QUICK DISCONNECT NOMINAL SIZE: 1.250 INCHES ALL ENDS IN
•
LEG LENGTH: 0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 96906-MS27024 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 ALLOY 865 FED SPEC ALL MATERIAL RESPONSES OR QQ-B-626 FED SPEC ALL MATERIAL RESPONSES BODY
OVERALL LENGTH2.125 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE1.250 INCHES ALL ENDS IN
LEG LENGTH0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA96906-MS27024 GOVERNMENT STANDARD
MATERIALCOPPER ALLOY BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 7
AA59326/5-2-B-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
633DReference document
Same NSN cross-reference
Reference document — Drawing number reference only
633D-.75BRReference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-59326/5AReference document
Same NSN cross-reference
Reference document — Secondary reference
633D-.750BRReference document
Same NSN cross-reference
Reference document — Secondary reference
AA59326/5A-2-B-1Reference 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 633D-3/4BR?
633D-3/4BR is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633D-3/4BR?
There are 7 known substitutes for 633D-3/4BR: AA59326/5-2-B-1, 633D, 633D-.75BR and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633D-3/4BR?
633D-3/4BR is cataloged in the U.S. Government catalog under NSN 4730-00-079-2451. 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.