PartsTable
Technical Data Sheet
633E-4AL ✓ 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: 4.250 INCHES MINIMUM IN, overall_length: 7.312 INCHES MINIMUM IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS, 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 4730-00-649-7388, 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-4AL
NSN: 4730-00-649-7388
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length4.250 INCHES MINIMUM IN
overall_length7.312 INCHES MINIMUM IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
surface_treatmentANODIZE BODY
quick_disconnect_methodCAM-LOCKING ALL ENDS
mating_end_identificationO P W CORP,FEMALE ADAPTER PART NO.633DS,4 IN.SIZE IN
specification/standard_data96906-MS27021 GOVERNMENT STANDARD
quick_disconnect_nominal_size4.312 INCHES ALL ENDS IN
NSN4730-00-649-7388
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633E-4AL · 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
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 4.000 INCHES ALL ENDS IN
FEATURES PROVIDED: SELF-SEALING
SPECIFICATION/STANDARD DATA: 96906-MS27021 GOVERNMENT STANDARD
LEG LENGTH: 4.250 INCHES MINIMUM IN
CONNECTION TYPE: INTERNAL QUICK DISCONNECT ALL ENDS
CONNECTION STYLE: BARBED OR SERRATED END ALL ENDS
QUICK DISCONNECT NOMINAL SIZE: 4.312 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH7.312 INCHES MINIMUM IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED4.000 INCHES ALL ENDS IN
FEATURES PROVIDEDSELF-SEALING
SPECIFICATION/STANDARD DATA96906-MS27021 GOVERNMENT STANDARD
LEG LENGTH4.250 INCHES MINIMUM IN
CONNECTION TYPEINTERNAL QUICK DISCONNECT ALL ENDS
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
QUICK DISCONNECT NOMINAL SIZE4.312 INCHES ALL ENDS IN
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
SURFACE TREATMENTANODIZE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
44270Interchangeable
interchangeable cross-reference
interchangeable
MS17398-2Interchangeable
interchangeable cross-reference
interchangeable
4320PL2179090Interchangeable
interchangeable cross-reference
interchangeable
1174-116Interchangeable
interchangeable cross-reference
interchangeable
4EInterchangeable
interchangeable cross-reference
interchangeable
MS27021-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633E-4AL?
633E-4AL is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633E-4AL?
There are 26 known substitutes for 633E-4AL: 44270, MS17398-2, 4320PL2179090 and 23 more. Substitute compatibility should be verified for your specific system.
Is 633E-4AL still available?
633E-4AL is currently cancelled.
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