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Technical Data Sheet
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639F4 ✓ 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 PLUG,TUBE FITTING,THREADED is a the manufacturer industrial component. Key specifications include color: WHITE, width: 2.000 INCHES NOMINAL IN, length: 2.000 INCHES NOMINAL IN, material: COPPER CORE CONDUCTOR ALL CONDUCTORS, body_style: STRAIGHT SHAPE, INTERNAL COUPLING, body_width: 3.375 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-542-4266, 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
639F4
NSN: 4730-00-542-4266
FSC: 4730
CAGE: 93061 — PARKER-HANNIFIN CORP DIV FLUID SYSTEM CONNECTOR DIVISION (USA)
SPECIFICATIONS
colorWHITE
width2.000 INCHES NOMINAL IN
length2.000 INCHES NOMINAL IN
materialCOPPER CORE CONDUCTOR ALL CONDUCTORS
body_styleSTRAIGHT SHAPE, INTERNAL COUPLING
body_width3.375 INCHES NOMINAL IN
cone_width1.1965 INCHES NOMINAL IN
shell_typeSOLID
body_height3.563 INCHES NOMINAL IN
body_length1.357 INCHES NOMINAL IN
design_typeNONREUSABLE
constructionSLOT WOUND
NSN4730-00-542-4266
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 639F4 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
1356DPC19Interchangeable
interchangeable cross-reference
interchangeable
3381Interchangeable
interchangeable cross-reference
interchangeable
47246Interchangeable
interchangeable cross-reference
interchangeable
1B3963Interchangeable
interchangeable cross-reference
interchangeable
0BT3381Interchangeable
interchangeable cross-reference
interchangeable
ESL682055-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 639F4?
639F4 is a PLUG,TUBE FITTING,THREADED.
What parts can replace 639F4?
There are 24 known substitutes for 639F4: 1356DPC19, 3381, 47246 and 21 more. Substitute compatibility should be verified for your specific system.
Is 639F4 still available?
639F4 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