PartsTable
Technical Data Sheet
18663 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include color: RED FIRST POSITION COVER SINGLE CONDUCTOR, material: COPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR, temp_rating: -55.0 CELSIUS AND 115.0 CELSIUS DEGC, conductor_form: STRANDED SINGLE CONDUCTOR, voltage_rating: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR, surface_treatment: TIN CORE CONDUCTOR SINGLE CONDUCTOR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-803-0663, 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
MRO MRO_GENERAL 18663
NSN: 6145-00-803-0663
FSC: 6145
CAGE: 92194 — BELDEN, INC. (USA)
SPECIFICATIONS
colorRED FIRST POSITION COVER SINGLE CONDUCTOR
materialCOPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
temp_rating-55.0 CELSIUS AND 115.0 CELSIUS DEGC
conductor_formSTRANDED SINGLE CONDUCTOR
voltage_rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
surface_treatmentTIN CORE CONDUCTOR SINGLE CONDUCTOR
round_conductor_size20 AWG SINGLE CONDUCTOR
cross-sectional_shape_styleROUND
strand_awg_size_per_conductor28 SINGLE CONDUCTOR
strand_quantity_per_conductor7 SINGLE CONDUCTOR
cross_section_outside_diameter0.063 INCHES NOMINAL IN
material_document_and_classificationMIL-M-20693,TYPE 3,GRADE E MIL SPEC SINGLE MATERIAL RESPONSE SECOND POSITION JACKET SINGLE CONDUCTOR
NSN6145-00-803-0663
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 18663 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
TEMP RATING: -55.0 CELSIUS AND 115.0 CELSIUS DEGC
CROSS-SECTIONAL SHAPE STYLE: ROUND
CONDUCTOR FORM: STRANDED SINGLE CONDUCTOR
SURFACE TREATMENT: TIN CORE CONDUCTOR SINGLE CONDUCTOR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
ROUND CONDUCTOR SIZE: 20 AWG SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER: 0.063 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-55.0 CELSIUS AND 115.0 CELSIUS DEGC
CROSS-SECTIONAL SHAPE STYLEROUND
CONDUCTOR FORMSTRANDED SINGLE CONDUCTOR
SURFACE TREATMENTTIN CORE CONDUCTOR SINGLE CONDUCTOR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
ROUND CONDUCTOR SIZE20 AWG SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER0.063 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693,TYPE 3,GRADE E MIL SPEC SINGLE MATERIAL RESPONSE SECOND POSITION JACKET SINGLE CONDUCTOR
VOLTAGE RATING600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
MIL-W-16878/17Upgraded Successor
successor cross-reference
successor
3003101Upgraded Successor
successor cross-reference
successor
W11-1-12Upgraded Successor
successor cross-reference
successor
W11/1/12Upgraded Successor
successor cross-reference
successor
M16878/17BLG9Upgraded Successor
successor cross-reference
successor
102202Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18663?
18663 is a RESISTOR,FIXED,WIRE WOUND,INDUCT. It is classified as a MRO (MRO_GENERAL).
What parts can replace 18663?
There are 30 known substitutes for 18663: MIL-W-16878/17, 3003101, W11-1-12 and 27 more. Substitute compatibility should be verified for your specific system.
Is 18663 still available?
18663 is currently cancelled.
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