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Technical Data Sheet
PartsTable / COMPONENT / 18-FF
18-FF ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include diameter: 0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN, material: PLASTIC POLYESTER AND GLASS FIBER BAND, overall_width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN, style_designator: SINGLE LOOP, tongue_hole_type: ROUND, UNTHREADED, material_thickness: 0.040 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-3721, 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
18-FF
NSN: 4730-00-278-3721
FSC: 4730
CAGE: 45681 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV CORPORATE HEADQUARTERS (USA)
SPECIFICATIONS
diameter0.194 INCHES MINIMUM AND 0.214 INCHES MAXIMUM IN
materialPLASTIC POLYESTER AND GLASS FIBER BAND
overall_width0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
style_designatorSINGLE LOOP
tongue_hole_typeROUND, UNTHREADED
material_thickness0.040 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
loop_inside_diameter1.125 INCHES NOMINAL IN
material_document_and_classificationL-P-383 FED SPEC SINGLE MATERIAL RESPONSE BAND
distance_from_loop_center_to_tongue_end1.187 INCHES NOMINAL IN
center_to_center_distance_between_loop_and_mounting_hole0.969 INCHES NOMINAL IN
NSN4730-00-278-3721
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 18-FF · 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 29
4M9009Interchangeable
interchangeable cross-reference
interchangeable
3225X2Interchangeable
interchangeable cross-reference
interchangeable
KF52-743-100PC164Interchangeable
interchangeable cross-reference
interchangeable
70-1315-1Interchangeable
interchangeable cross-reference
interchangeable
7390047Interchangeable
interchangeable cross-reference
interchangeable
1/8FF-BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18-FF?
18-FF is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 18-FF?
There are 29 known substitutes for 18-FF: 4M9009, 3225X2, KF52-743-100PC164 and 26 more. Substitute compatibility should be verified for your specific system.
Is 18-FF still available?
18-FF 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