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PartsTable / COMPONENT / 633D-4BR
633D-4BR ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, leg_length: 1.562 INCHES NOMINAL IN, overall_length: 3.687 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF, nominal_thread_size: 4.000 INCHES ALL ENDS IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) 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
633D-4BR
NSN: 4730-00-054-6226
FSC: 4730
CAGE: 9H113 — DOVER RESOURCES INC DBA OPW ENGINEERED SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
leg_length1.562 INCHES NOMINAL IN
overall_length3.687 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size4.000 INCHES ALL ENDS IN
quick_disconnect_methodCAM-LOCKING ALL ENDS
thread_series_designatorNPT ALL ENDS
specification/standard_data96906-MS27024 GOVERNMENT STANDARD
quick_disconnect_nominal_size4.703 INCHES ALL ENDS IN
NSN4730-00-054-6226
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633D-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
•
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
•
CONNECTION STYLE: PLAIN ALL ENDS
•
LEG LENGTH: 1.562 INCHES NOMINAL IN
•
QUICK DISCONNECT NOMINAL SIZE: 4.703 INCHES ALL ENDS IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
SPECIFICATION/STANDARD DATA: 96906-MS27024 GOVERNMENT STANDARD
•
NOMINAL THREAD SIZE: 4.000 INCHES ALL ENDS IN
•
MATERIAL: COPPER ALLOY BODY
TECHNICAL CHARACTERISTICS (FLIS)
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
CONNECTION STYLEPLAIN ALL ENDS
LEG LENGTH1.562 INCHES NOMINAL IN
QUICK DISCONNECT NOMINAL SIZE4.703 INCHES ALL ENDS IN
THREAD SERIES DESIGNATORNPT ALL ENDS
SPECIFICATION/STANDARD DATA96906-MS27024 GOVERNMENT STANDARD
NOMINAL THREAD SIZE4.000 INCHES ALL ENDS IN
MATERIALCOPPER ALLOY BODY
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH3.687 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
AA59326/5-2-B-1Interchangeable
interchangeable cross-reference
interchangeable
633DInterchangeable
interchangeable cross-reference
interchangeable
633D-.75BRInterchangeable
interchangeable cross-reference
interchangeable
633-D-1/2IN-BRInterchangeable
interchangeable cross-reference
interchangeable
633D-1/2BRInterchangeable
interchangeable cross-reference
interchangeable
50-D-BRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633D-4BR?
633D-4BR is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633D-4BR?
There are 16 known substitutes for 633D-4BR: AA59326/5-2-B-1, 633D, 633D-.75BR and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633D-4BR?
633D-4BR is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-054-6226. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026