PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

75C0MSpark Plug

General Motors Corp · NSN 2920-00-540-8322 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-540-8322 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-540-8322. Primary manufacturer part number: 75C0M.
Features
  • Spark Plug — FSC 2920
  • Width Across Flats: 0.938 INCHES NOMINAL IN
  • Test Data Document: 81348-WS506 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
  • Reach Length: 0.625 INCHES NOMINAL IN
  • Thread Size and Series/type Designator: 7/8-18 UNS BASE
  • Pressure Rating: 140.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM MEAN EFFECTIVE LBS
  • Height Above Mounting Surface: 2.250 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Spark Plug, cataloged under National Stock Number 2920-00-540-8322, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is General Motors Corp. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 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
NSN2920-00-540-8322
Primary Part Number75C0M
Item NameSpark Plug
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerGeneral Motors Corp
StatusCANCELLED
Width Across Flats0.938 INCHES NOMINAL IN
Test Data Document81348-WS506 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Electrode StyleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
Reach Length0.625 INCHES NOMINAL IN
Thread Size and Series/type Designator7/8-18 UNS BASE
Pressure Rating140.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM MEAN EFFECTIVE LBS
Height Above Mounting Surface2.250 INCHES NOMINAL IN
Seat Major Diameter1.125 INCHES MAXIMUM IN
Nondefinitive Spec/std Data3 TYPE AND B CLASS
Usage DesignENGINE OTHER THAN AIRCRAFT
Body StyleUNSHIELDED,SOLID OR THREADED POST,GASKET SEAT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-209-3773W14 INTERCHANGEABLE
Washer,key
Skf Usa Inc.
5310-00-226-5980 INTERCHANGEABLE
Washer,key
3820-00-290-4991 INTERCHANGEABLE
Breaker,paving
5310-00-425-2015W-14 INTERCHANGEABLE
Washer,key
Whittet-Higgins Company
3020-00-448-2782W1-4 INTERCHANGEABLE
Gear,worm Wheel
Designatronics Incorporated Div Sterling Instruments Div
5310-00-481-6481102423 INTERCHANGEABLE
Washer,lock
Paccar Winch Inc Dba Paccar Winch Division
5310-00-489-6213W14 INTERCHANGEABLE
Washer,flat
Gapi Ltd
6520-00-515-7550W14 INTERCHANGEABLE
Clamp,rubber Dam,dental
Heraeus Kulzer Inc Dental Products Div
5970-00-688-7308HW8 INTERCHANGEABLE
Insulation Sleeving,electrical
Saint-Gobain Performance Plastics Corporation
5340-00-813-4913W-14 INTERCHANGEABLE
Cap,protective,dust and Moisture
Caplugs Llc Dba Mokon Div Caplugs
Cross-Reference Index
Part NumberManufacturer
TT8 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
75C0M PRIMARY General Motors Corp (USA)
995444R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
07236A3 PRIMARY Cnh Industrial America Llc Dba Cnh America (USA)
1559472 General Motors Llc Dba General Motors (USA)
2066 PRIMARY Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling (USA)
2066 Hyster-Yale Group, Inc. (USA)
WS506 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1COM PRIMARY Champion Aerospace Llc (USA)
W14 PRIMARY Champion Aerospace Llc (USA)
TT8 Ford Motor Company (USA)
1559472 General Motors Llc Dba General Motors Llc (USA)
Related Parts
5310-00-209-3773INTERCHANGEABLE
WASHER,KEY
W14
5310-00-226-5980INTERCHANGEABLE
WASHER,KEY
3820-00-290-4991INTERCHANGEABLE
BREAKER,PAVING
5310-00-425-2015INTERCHANGEABLE
WASHER,KEY
W-14
3020-00-448-2782INTERCHANGEABLE
GEAR,WORM WHEEL
W1-4
5310-00-481-6481INTERCHANGEABLE
WASHER,LOCK
102423
5310-00-489-6213INTERCHANGEABLE
WASHER,FLAT
W14
6520-00-515-7550INTERCHANGEABLE
CLAMP,RUBBER DAM,DENTAL
W14
5970-00-688-7308INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
HW8
5340-00-813-4913INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
W-14
3110-00-828-4735INTERCHANGEABLE
BEARING,BALL,TRACK ROLLER
A3323-1
5330-00-890-6308INTERCHANGEABLE
RETAINER,PACKING
9-974-100008

Frequently Asked Questions

What is NSN 2920-00-540-8322?

NSN 2920-00-540-8322 is a Spark Plug, manufactured by General Motors Corp, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-540-8322?

NSN 2920-00-540-8322 has 12 cross-referenced part numbers: TT8 (Ford Motor Co Ford Parts and Service Div Government Part Sales), 75C0M (General Motors Corp), 995444R91 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 07236A3 (Cnh Industrial America Llc Dba Cnh America), 1559472 (General Motors Llc Dba General Motors) and 7 more.

What NSN replaces 2920-00-540-8322?

There are 12 known substitutes for 2920-00-540-8322: 5310-00-209-3773, 5310-00-226-5980, 3820-00-290-4991 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 75C0M?

Key specifications for 75C0M: Width Across Flats: 0.938 INCHES NOMINAL IN; Test Data Document: 81348-WS506 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4); Reach Length: 0.625 INCHES NOMINAL IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-540-8322 still in active supply?

NSN 2920-00-540-8322 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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