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Technical Data Sheet
PartsTable / COMPONENT / 2640-067
2640-067 ✓ 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: 03N SHIP, B.FRANKLIN CLASS SSBN (POSEIDON)., general_characteristics_item_description: STEEL; 150 PSI WORKING PRESSURE, 1.000 IN. NPT PIPE THD ON ONE END, OTHER END FLANGED.

IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-064-8578, 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
2640-067
NSN: 4730-00-064-8578
FSC: 4730
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
end_item_identification03N SHIP, B.FRANKLIN CLASS SSBN (POSEIDON).
general_characteristics_item_descriptionSTEEL; 150 PSI WORKING PRESSURE, 1.000 IN. NPT PIPE THD ON ONE END, OTHER END FLANGED. IN
NSN4730-00-064-8578
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2640-067 · 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
•
LEG LENGTH: 2.000 INCHES NOMINAL IN
•
QUICK DISCONNECT METHOD: PUSH-PULL ALL ENDS
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
QUICK DISCONNECT NOMINAL SIZE: 3.688 INCHES ALL ENDS IN
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
•
THREAD SERIES DESIGNATOR: UN ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
LEG LENGTH2.000 INCHES NOMINAL IN
OVERALL LENGTH4.562 INCHES NOMINAL IN
QUICK DISCONNECT METHODPUSH-PULL ALL ENDS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL ALL ENDS
THREAD CLASS3A ALL ENDS A
QUICK DISCONNECT NOMINAL SIZE3.688 INCHES ALL ENDS IN
THREAD QUANTITY PER INCH12 ALL ENDS
THREAD SERIES DESIGNATORUN ALL ENDS
STYLE DESIGNATORMALE COUPLING HALF
MATERIALSTEEL BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
2640-067Interchangeable
interchangeable cross-reference
interchangeable
69-103Interchangeable
interchangeable cross-reference
interchangeable
14-97-0210Interchangeable
interchangeable cross-reference
interchangeable
SS 845 1889816PC14-1INInterchangeable
interchangeable cross-reference
interchangeable
SS 845 1889816Interchangeable
interchangeable cross-reference
interchangeable
845-1889816REVGASSYACInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2640-067?
2640-067 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 2640-067?
There are 7 known substitutes for 2640-067: 2640-067, 69-103, 14-97-0210 and 4 more. Substitute compatibility should be verified for your specific system.
Is 2640-067 still available?
2640-067 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