PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

86-9-8Spark Plug

Dresser Industries Inc Leroi Div · NSN 2920-00-144-8093 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-144-8093 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-144-8093. Primary manufacturer part number: 86-9-8.
Features
  • Spark Plug — FSC 2920
  • Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
  • Width Across Flats: 0.875 INCHES NOMINAL IN
  • Body Style: UNSHIELDED, THREADED POST, TAPERED SEAT
  • Usage Design: ENGINE OTHER THAN AIRCRAFT
  • Seat Major Diameter: 0.875 INCHES NOMINAL IN
  • Height Above Mounting Surface: 2.094 INCHES NOMINAL IN
  • Pressure Rating: 140.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM MEAN EFFECTIVE LBS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Spark Plug, cataloged under National Stock Number 2920-00-144-8093, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 38 commercial cross-references from 22 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2920-00-144-8093
Primary Part Number86-9-8
Item NameSpark Plug
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusCANCELLED
Electrode StyleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
Width Across Flats0.875 INCHES NOMINAL IN
Body StyleUNSHIELDED, THREADED POST, TAPERED SEAT
Usage DesignENGINE OTHER THAN AIRCRAFT
Seat Major Diameter0.875 INCHES NOMINAL IN
Height Above Mounting Surface2.094 INCHES NOMINAL IN
Pressure Rating140.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM MEAN EFFECTIVE LBS
Reach Length0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4810-00-020-2784202-108 INTERCHANGEABLE
Valve,solenoid
Altec Air, Llc Dba Altec Llc
5306-00-113-15368698 INTERCHANGEABLE
Bolt,externally Relieved Body
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
3040-00-218-4376YG6 INTERCHANGEABLE
Connecting Link,rigid
Circor Naval Solutions Llc Dba Warren Pumps
3110-00-227-2876MS24464-32 INTERCHANGEABLE
Bearing,roller,needle
Sae International Dba Sae International
1710-00-475-0653 INTERCHANGEABLE
Packing O Ring
1660-00-535-33285043-12 INTERCHANGEABLE
Valve Assy,relief,o
Avox Systems Inc Dba Avox Systems Inc
2920-00-540-7539377 INTERCHANGEABLE
Spark Plug
Allied-Signal Inc Autolite Div
5950-00-647-83948698 INTERCHANGEABLE
Transformer,power
Centroid, Inc. Dba Centroid Inc
5306-00-843-6442 INTERCHANGEABLE
Bolt,machine
5305-00-872-98458698 INTERCHANGEABLE
Thumbscrew
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Cross-Reference Index
Part NumberManufacturer
17-7624-700-150 Chief of Engineers Dept of Army (USA)
15 Dart Truck Co (USA)
350863 Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co (USA)
61497DA Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
5HD Leonard Spark Plug Co Inc (USA)
17-7624-500-700 Chief of Engineers Dept of Army (USA)
YD47 Wisconsin Motors, Llc (USA)
43403DB Navistar International Corporation Dba Navistar (USA)
VT2098 Cnh Industrial America Llc Dba Cnh America (USA)
M100C Bridgestone Americas Tire Operations, Llc (USA)
WPP139 Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA)
SP201-8C0MH Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc (USA)
38887 Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
YD18 Wisconsin Motors, Llc (USA)
17-7624-700-115 Chief of Engineers Dept of Army (USA)
353982R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
M100 Bridgestone Americas Tire Operations, Llc (USA)
X24T5 Ingersoll Rand Co (USA)
43403D Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
353991R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
Related Parts
4810-00-020-2784INTERCHANGEABLE
VALVE,SOLENOID
202-108
5306-00-113-1536INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
8698
3040-00-218-4376INTERCHANGEABLE
CONNECTING LINK,RIGID
YG6
3110-00-227-2876INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MS24464-32
1710-00-475-0653INTERCHANGEABLE
PACKING O RING
1660-00-535-3328INTERCHANGEABLE
VALVE ASSY,RELIEF,O
5043-12
2920-00-540-7539INTERCHANGEABLE
SPARK PLUG
377
5950-00-647-8394INTERCHANGEABLE
TRANSFORMER,POWER
8698
5306-00-843-6442INTERCHANGEABLE
BOLT,MACHINE
5305-00-872-9845INTERCHANGEABLE
THUMBSCREW
8698
5315-00-930-9222INTERCHANGEABLE
PIN,QUICK RELEASE
SK1233
6150-01-099-6789INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E

Frequently Asked Questions

What is NSN 2920-00-144-8093?

NSN 2920-00-144-8093 is a Spark Plug, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-144-8093?

NSN 2920-00-144-8093 has 38 cross-referenced part numbers: 17-7624-700-150 (Chief of Engineers Dept of Army), 15 (Dart Truck Co), 350863 (Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co), 61497DA (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 5HD (Leonard Spark Plug Co Inc) and 33 more.

What NSN replaces 2920-00-144-8093?

There are 12 known substitutes for 2920-00-144-8093: 4810-00-020-2784, 5306-00-113-1536, 3040-00-218-4376 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 86-9-8?

Key specifications for 86-9-8: Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4); Width Across Flats: 0.875 INCHES NOMINAL IN; Body Style: UNSHIELDED, THREADED POST, TAPERED SEAT; Usage Design: ENGINE OTHER THAN AIRCRAFT. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-144-8093 still in active supply?

NSN 2920-00-144-8093 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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