PartsTable
Technical Data Sheet
633A-4IN ✓ 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: 1.109 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN, overall_length: 3.188 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN, connection_type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-517-6827, 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
633A-4IN
NSN: 4730-00-517-6827
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
leg_length1.109 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
overall_length3.188 INCHES MINIMUM AND 3.312 INCHES MAXIMUM IN
connection_typeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size4.000 INCHES ALL ENDS IN
end_item_identificationCKF TRUCK, FIRE/CRASH P10
quick_disconnect_methodCAM-LOCKING ALL ENDS
thread_series_designatorNPT ALL ENDS
specification/standard_data96906-MS27020 GOVERNMENT STANDARD
quick_disconnect_nominal_size4.250 INCHES ALL ENDS IN
NSN4730-00-517-6827
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633A-4IN · 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
SPECIFICATION/STANDARD DATA: 96906-MS27020 GOVERNMENT STANDARD
CONNECTION STYLE: PLAIN ALL ENDS
NOMINAL THREAD SIZE: 4.000 INCHES ALL ENDS IN
THREAD SERIES DESIGNATOR: NPT ALL ENDS
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
MATERIAL: COPPER ALLOY BODY
LEG LENGTH: 1.109 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA96906-MS27020 GOVERNMENT STANDARD
CONNECTION STYLEPLAIN ALL ENDS
NOMINAL THREAD SIZE4.000 INCHES ALL ENDS IN
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
MATERIALCOPPER ALLOY BODY
LEG LENGTH1.109 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
QUICK DISCONNECT NOMINAL SIZE4.250 INCHES ALL ENDS IN
STYLE DESIGNATORMALE COUPLING HALF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
A-A-59326/1Interchangeable
interchangeable cross-reference
interchangeable
MS27020-11Interchangeable
interchangeable cross-reference
interchangeable
300705Interchangeable
interchangeable cross-reference
interchangeable
633-A 3INInterchangeable
interchangeable cross-reference
interchangeable
AA59326/1A-8-AInterchangeable
interchangeable cross-reference
interchangeable
MS27020-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633A-4IN?
633A-4IN is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633A-4IN?
There are 33 known substitutes for 633A-4IN: A-A-59326/1, MS27020-11, 300705 and 30 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 633A-4IN?
633A-4IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-517-6827. This indicates validated use in U.S. government and defense supply chains.
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