PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25951Adapter,spark Plug

John Deer Consumer Products Inc · NSN 2920-00-640-7886 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-640-7886 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-640-7886. Primary manufacturer part number: 25951.
Features
  • Adapter,spark Plug — FSC 2920
  • Width Across Flats: 0.750 INCHES NOMINAL IN
  • Bottom End Counterbore Depth: 0.594 INCHES NOMINAL IN
  • Material: COPPER ALLOY BODY
  • Outside Thread Diameter: 0.625 INCHES NOMINAL IN
  • Drive Type: HEXAGON
  • Head: INCLUDED
  • Head End Counterbore Depth: 0.375 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Adapter,spark Plug, cataloged under National Stock Number 2920-00-640-7886, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is John Deer Consumer Products Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2920-00-640-7886
Primary Part Number25951
Item NameAdapter,spark Plug
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerJohn Deer Consumer Products Inc
StatusCANCELLED
Width Across Flats0.750 INCHES NOMINAL IN
Bottom End Counterbore Depth0.594 INCHES NOMINAL IN
MaterialCOPPER ALLOY BODY
Outside Thread Diameter0.625 INCHES NOMINAL IN
Drive TypeHEXAGON
HeadINCLUDED
Head End Counterbore Depth0.375 INCHES NOMINAL IN
Bottom End Counterbore Diameter0.437 INCHES NOMINAL IN
Head End Counterbore Diameter0.580 INCHES NOMINAL IN
Accommodated Spark Plug Thread Diameter0.625 INCHES NOMINAL IN
Counterbore FeatureINCLUDED
Head Height0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
6140-01-113-0014221-0079-010 INTERCHANGEABLE
Battery,storage
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5325-01-114-409125951 INTERCHANGEABLE
Insert,screw Thread
Jergens Inc Div Tooling Components Division
1560-01-713-39802-5951-7 INTERCHANGEABLE
Rib,stiffener,aircraft
The Boeing Company Div Defense
1560-01-714-37392-5951-6 INTERCHANGEABLE
Web,structural Component,aircraf
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
25951 Paccar Government Group Co Yarrow Bay Office Pk (USA)
10559322 General Dynamics Land Systems Canadacorp (CAN)
25951 PRIMARY John Deer Consumer Products Inc (USA)
Related Parts
6140-01-113-0014INTERCHANGEABLE
BATTERY,STORAGE
221-0079-010
5325-01-114-4091INTERCHANGEABLE
INSERT,SCREW THREAD
25951
1560-01-713-3980INTERCHANGEABLE
RIB,STIFFENER,AIRCRAFT
2-5951-7
1560-01-714-3739INTERCHANGEABLE
WEB,STRUCTURAL COMPONENT,AIRCRAF
2-5951-6

Frequently Asked Questions

What is NSN 2920-00-640-7886?

NSN 2920-00-640-7886 is a Adapter,spark Plug, manufactured by John Deer Consumer Products Inc, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-640-7886?

NSN 2920-00-640-7886 has 3 cross-referenced part numbers: 25951 (Paccar Government Group Co Yarrow Bay Office Pk), 10559322 (General Dynamics Land Systems Canadacorp), 25951 (John Deer Consumer Products Inc).

What NSN replaces 2920-00-640-7886?

There are 4 known substitutes for 2920-00-640-7886: 6140-01-113-0014, 5325-01-114-4091, 1560-01-713-3980 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25951?

Key specifications for 25951: Width Across Flats: 0.750 INCHES NOMINAL IN; Bottom End Counterbore Depth: 0.594 INCHES NOMINAL IN; Material: COPPER ALLOY BODY; Outside Thread Diameter: 0.625 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-640-7886 still in active supply?

NSN 2920-00-640-7886 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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