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Technical Data Sheet
PartsTable / COMPONENT / 3647GB
3647GB ✓ 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 CORROSION RESISTING BODY, leg_length: 1.000 INCHES NOMINAL IN, overall_length: 3.688 INCHES NOMINAL IN, connection_type: INTERNAL QUICK DISCONNECT ALL ENDS, connection_style: PLAIN ALL ENDS, special_features: FURNISHED W/CAP AND CHAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-4941, 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
3647GB
NSN: 4730-00-196-4941
FSC: 4730
CAGE: 26289 — GREENLEE TEXTRON INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
leg_length1.000 INCHES NOMINAL IN
overall_length3.688 INCHES NOMINAL IN
connection_typeINTERNAL QUICK DISCONNECT ALL ENDS
connection_stylePLAIN ALL ENDS
special_featuresFURNISHED W/CAP AND CHAIN
style_designatorMALE COUPLING HALF
nominal_thread_size0.750 INCHES ALL ENDS IN
quick_disconnect_methodPUSH-PULL ALL ENDS
thread_series_designatorNPT ALL ENDS
NSN4730-00-196-4941
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3647GB · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
MATERIAL: STEEL CORROSION RESISTING BODY
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
MATERIALSTEEL CORROSION RESISTING BODY
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE FIRST FLUID END CONNECTION
CONNECTION STYLEPLAIN ALL ENDS
LEG LENGTH1.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
40505Interchangeable
interchangeable cross-reference
interchangeable
30301Interchangeable
interchangeable cross-reference
interchangeable
TWD-5Interchangeable
interchangeable cross-reference
interchangeable
BTW5AInterchangeable
interchangeable cross-reference
interchangeable
1-280007Interchangeable
interchangeable cross-reference
interchangeable
40537Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3647GB?
3647GB is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 3647GB?
There are 6 known substitutes for 3647GB: 40505, 30301, TWD-5 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3647GB?
3647GB is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-196-4941. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026