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Technical Data Sheet
PartsTable / COMPONENT / 633-B-2IN-AL
633-B-2IN-AL ✓ 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: 0.938 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN, overall_length: 3.100 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF, surface_treatment: ANODIZE BODY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-088-9285, 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
633-B-2IN-AL
NSN: 4730-00-088-9285
FSC: 4730
CAGE: 81718 — OPW FUELING COMPONENTS INC. DIV OPW FUELING COMPONENTS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length0.938 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
overall_length3.100 INCHES MINIMUM AND 3.375 INCHES MAXIMUM IN
connection_stylePLAIN ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
nominal_thread_size2.000 INCHES ALL ENDS IN
end_item_identificationTANK,PUMPING UNIT; TRUCK CARGO AND WRECKER AND TANK M520,M553,M559 AND M877,UH-60A BLACKHAWK HELICOPTER,REFUELING SYSTEM A
quick_disconnect_methodCAM-LOCKING ALL ENDS
thread_series_designatorNPT ALL ENDS
specification/standard_data96906-MS27026 GOVERNMENT STANDARD
quick_disconnect_nominal_size2.000 INCHES ALL ENDS IN
NSN4730-00-088-9285
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 633-B-2IN-AL · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
•
MATERIAL: ALUMINUM ALLOY BODY
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
QUICK DISCONNECT NOMINAL SIZE: 2.000 INCHES ALL ENDS IN
•
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
•
CONNECTION STYLE: PLAIN ALL ENDS
•
LEG LENGTH: 0.938 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
MATERIALALUMINUM ALLOY BODY
THREAD SERIES DESIGNATORNPT ALL ENDS
END ITEM IDENTIFICATIONTANK,PUMPING UNIT; TRUCK CARGO AND WRECKER AND TANK M520,M553,M559 AND M877,UH-60A BLACKHAWK HELICOPTER,REFUELING SYSTEM A
QUICK DISCONNECT NOMINAL SIZE2.000 INCHES ALL ENDS IN
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
CONNECTION STYLEPLAIN ALL ENDS
LEG LENGTH0.938 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE BODY
NOMINAL THREAD SIZE2.000 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
633-BInterchangeable
interchangeable cross-reference
interchangeable
633-B-0190Interchangeable
interchangeable cross-reference
interchangeable
633B-AL60Interchangeable
interchangeable cross-reference
interchangeable
MS27030Interchangeable
interchangeable cross-reference
interchangeable
MS27030-7Interchangeable
interchangeable cross-reference
interchangeable
A-A-59326Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 633-B-2IN-AL?
633-B-2IN-AL is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 633-B-2IN-AL?
There are 32 known substitutes for 633-B-2IN-AL: 633-B, 633-B-0190, 633B-AL60 and 29 more. Substitute compatibility should be verified for your specific system.
Is 633-B-2IN-AL still available?
633-B-2IN-AL 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