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Technical Data Sheet
PartsTable / COMPONENT / 4618-1 X 3/4
4618-1 X 3/4 ✓ 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 4618-1 X 3/4 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-478-2635, 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
4618-1 X 3/4
NSN: 4730-00-478-2635
FSC: 4730
CAGE: 61623 — NIBCO INC CHEMTROL DIV (USA)
SPECIFICATIONS
Part Number4618-1 X 3/4
NSN4730-00-478-2635
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4618-1 X 3/4 · 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
•
NOMINAL OVERALL LENGTH: 1.250 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.750 INCHES SECOND END IN
•
MATERIAL: PLASTIC OVERALL
•
CONNECTION TYPE: UNTHREADED INTERNAL PIPE SECOND END
•
REDUCER TYPE: CONCENTRIC
•
CONNECTION STYLE: SOCKET (PIPE) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.250 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES SECOND END IN
MATERIALPLASTIC OVERALL
CONNECTION TYPEUNTHREADED INTERNAL PIPE SECOND END
REDUCER TYPECONCENTRIC
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES FIRST END IN
CONNECTION STYLESOCKET (PIPE) SECOND END
CONNECTION TYPEUNTHREADED INTERNAL PIPE FIRST END
CONNECTION STYLESOCKET (PIPE) FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
437131Interchangeable
interchangeable cross-reference
interchangeable
03013007Interchangeable
interchangeable cross-reference
interchangeable
401-005Interchangeable
interchangeable cross-reference
interchangeable
D2466 TEE NPS 1/2 PVCIInterchangeable
interchangeable cross-reference
interchangeable
FIG. 405-3/4IN.Interchangeable
interchangeable cross-reference
interchangeable
FIG. 405-1.0IN.Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4618-1 X 3/4?
4618-1 X 3/4 is a 4618-1 X 3/4.
What parts can replace 4618-1 X 3/4?
There are 31 known substitutes for 4618-1 X 3/4: 437131, 03013007, 401-005 and 28 more. Substitute compatibility should be verified for your specific system.
Is 4618-1 X 3/4 still available?
4618-1 X 3/4 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