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Technical Data Sheet
PartsTable / COMPONENT / S18AR
S18AR ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include body_style: ELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT, reach_length: 0.500 INCHES NOMINAL IN, usage_design: ENGINE OTHER THAN AIRCRAFT, electrode_style: SINGLE ROUND GROUND ELECTRODE, width_across_flats: 1.000 INCHES NOMINAL IN, seat_major_diameter: 1.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2920-00-248-1619, 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
S18AR
NSN: 2920-00-248-1619
FSC: 2920
CAGE: 70040 — GENERAL MOTORS LLC DBA GENERAL MOTORS (USA)
SPECIFICATIONS
body_styleELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT
reach_length0.500 INCHES NOMINAL IN
usage_designENGINE OTHER THAN AIRCRAFT
electrode_styleSINGLE ROUND GROUND ELECTRODE
width_across_flats1.000 INCHES NOMINAL IN
seat_major_diameter1.000 INCHES NOMINAL IN
shield_thread_length0.250 INCHES NOMINAL IN
dc_resistance_rating_in_ohms10000.0 NOMINAL
height_above_mounting_surface3.000 INCHES NOMINAL IN
top_to_shield_thread_distance0.125 INCHES NOMINAL IN
terminal_sleeve_inside_diameter0.378 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN
top_to_terminal_contact_distance1.000 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
NSN2920-00-248-1619
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,FIXED,WIRE WOUND,INDUCT TITLE COMPONENT PN S18AR MFR RESISTOR,FIXED,WIRE WO
KEY FEATURES
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 5/8-24 UNEF SHIELD
•
SHIELD THREAD LENGTH: 0.250 INCHES NOMINAL IN
•
SEAT MAJOR DIAMETER: 1.000 INCHES NOMINAL IN
•
TOP TO TERMINAL CONTACT DISTANCE: 1.000 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
•
TOP TO SHIELD THREAD DISTANCE: 0.125 INCHES NOMINAL IN
•
HEIGHT ABOVE MOUNTING SURFACE: 3.000 INCHES NOMINAL IN
•
TERMINAL SLEEVE INSIDE DIAMETER: 0.378 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN
•
USAGE DESIGN: ENGINE OTHER THAN AIRCRAFT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR5/8-24 UNEF SHIELD
SHIELD THREAD LENGTH0.250 INCHES NOMINAL IN
SEAT MAJOR DIAMETER1.000 INCHES NOMINAL IN
TOP TO TERMINAL CONTACT DISTANCE1.000 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
TOP TO SHIELD THREAD DISTANCE0.125 INCHES NOMINAL IN
HEIGHT ABOVE MOUNTING SURFACE3.000 INCHES NOMINAL IN
TERMINAL SLEEVE INSIDE DIAMETER0.378 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN
USAGE DESIGNENGINE OTHER THAN AIRCRAFT
BODY STYLEELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT
DC RESISTANCE RATING IN OHMS10000.0 NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
BL26054ISSUE4Interchangeable
interchangeable cross-reference
interchangeable
670203Interchangeable
interchangeable cross-reference
interchangeable
M49Interchangeable
interchangeable cross-reference
interchangeable
1005-27001FInterchangeable
interchangeable cross-reference
interchangeable
10Interchangeable
interchangeable cross-reference
interchangeable
8358341Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S18AR?
S18AR is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace S18AR?
There are 18 known substitutes for S18AR: BL26054ISSUE4, 670203, M49 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S18AR?
S18AR is cataloged in the Federal Logistics Information System (FLIS) under NSN 2920-00-248-1619. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026