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Technical Data Sheet
PartsTable / COMPONENT / 633E-3AL
633E-3AL ✓ 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: ALUMINUM ALLOY BODY, leg_length: 4.000 INCHES MINIMUM AND 4.250 INCHES MAXIMUM IN, overall_length: 6.500 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN, connection_type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION, connection_style: BARBED OR SERRATED END ALL ENDS, style_designator: MALE COUPLING HALF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-873-4535, 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
633E-3AL
NSN: 4730-00-873-4535
FSC: 4730
CAGE: 9H113 — DOVER RESOURCES INC DBA OPW ENGINEERED SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length4.000 INCHES MINIMUM AND 4.250 INCHES MAXIMUM IN
overall_length6.500 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN
connection_typeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
quick_disconnect_methodCAM-LOCKING ALL ENDS
quick_disconnect_nominal_size3.594 INCHES ALL ENDS IN
material_document_and_classificationQQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
nominal_inside_diameter_hose_accommodated3.000 INCHES ALL ENDS IN
NSN4730-00-873-4535
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633E-3AL · 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 TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
SURFACE TREATMENT: ANODIZE BODY
•
FEATURES PROVIDED: SELF-SEALING
•
LEG LENGTH: 4.000 INCHES MINIMUM AND 4.250 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY BODY
•
CONNECTION STYLE: BARBED OR SERRATED END ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH6.500 INCHES MINIMUM AND 6.750 INCHES MAXIMUM IN
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
SURFACE TREATMENTANODIZE BODY
FEATURES PROVIDEDSELF-SEALING
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
LEG LENGTH4.000 INCHES MINIMUM AND 4.250 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY BODY
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
MS27021-9Interchangeable
interchangeable cross-reference
interchangeable
15A107P1Interchangeable
interchangeable cross-reference
interchangeable
6-1-746-8-3AInterchangeable
interchangeable cross-reference
interchangeable
A-A-59326/2Interchangeable
interchangeable cross-reference
interchangeable
AA59326/2-4-BInterchangeable
interchangeable cross-reference
interchangeable
125-C-BRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633E-3AL?
633E-3AL is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633E-3AL?
There are 30 known substitutes for 633E-3AL: MS27021-9, 15A107P1, 6-1-746-8-3A and 27 more. Substitute compatibility should be verified for your specific system.
Is 633E-3AL still available?
633E-3AL is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026