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3964337 ✓ 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 end_item_identification: 4940-01-463-7940 FORWARD REPAIR SYSTEM M7. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-559-0037, 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
3964337
NSN: 4730-01-559-0037
FSC: 4730
CAGE: K4843 — CUMMINS LTD (GBR)
SPECIFICATIONS
end_item_identification4940-01-463-7940 FORWARD REPAIR SYSTEM M7
NSN4730-01-559-0037
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3964337 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION4940-01-463-7940 FORWARD REPAIR SYSTEM M7
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
PS86826-1Interchangeable
interchangeable cross-reference
interchangeable
700563-2Interchangeable
interchangeable cross-reference
interchangeable
1005007005590Interchangeable
interchangeable cross-reference
interchangeable
7005590Interchangeable
interchangeable cross-reference
interchangeable
569-4Interchangeable
interchangeable cross-reference
interchangeable
02/912609Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3964337?
3964337 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 3964337?
There are 8 known substitutes for 3964337: PS86826-1, 700563-2, 1005007005590 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3964337?
3964337 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-559-0037. 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