PartsTable
Technical Data Sheet
633E-4SST ✓ 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: STEEL BODY, leg_length: 4.250 INCHES NOMINAL IN, connection_type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION, connection_style: BARBED OR SERRATED END ALL ENDS, style_designator: MALE COUPLING HALF, features_provided: SELF-SEALING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-346-8763, 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-4SST
NSN: 4730-01-346-8763
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length4.250 INCHES NOMINAL IN
connection_typeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
quick_disconnect_methodCAM-LOCKING ALL ENDS
quick_disconnect_nominal_size4.000 INCHES ALL ENDS IN
material_document_and_classificationASTM A276 ASSN STD SINGLE MATERIAL RESPONSE BODY
nominal_inside_diameter_hose_accommodated4.000 INCHES ALL ENDS IN
NSN4730-01-346-8763
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633E-4SST · 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: BARBED OR SERRATED END ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 4.000 INCHES ALL ENDS IN
CONNECTION TYPE: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE BODY
LEG LENGTH: 4.250 INCHES NOMINAL IN
FEATURES PROVIDED: SELF-SEALING
STYLE DESIGNATOR: MALE COUPLING HALF
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED4.000 INCHES ALL ENDS IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A276 ASSN STD SINGLE MATERIAL RESPONSE BODY
LEG LENGTH4.250 INCHES NOMINAL IN
FEATURES PROVIDEDSELF-SEALING
STYLE DESIGNATORMALE COUPLING HALF
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
MATERIALSTEEL BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
A14051Interchangeable
interchangeable cross-reference
interchangeable
1-238-021Interchangeable
interchangeable cross-reference
interchangeable
238Interchangeable
interchangeable cross-reference
interchangeable
633E4-SSInterchangeable
Same NIIN cross-reference
interchangeable
40ESSInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633E-4SST?
633E-4SST is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633E-4SST?
There are 5 known substitutes for 633E-4SST: A14051, 1-238-021, 238 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633E-4SST?
633E-4SST is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-346-8763. This indicates validated use in U.S. government and defense supply chains.
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