The Spark Plug, cataloged under National Stock Number 2920-01-145-6686, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Allied-Signal Inc Autolite Div. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 25 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 2920-01-145-6686 |
| Primary Part Number | 666 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | Allied-Signal Inc Autolite Div |
| Status | CANCELLED |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Features Provided | REGULAR TERMINAL NUT |
| Electrode Style | SINGLE GROUND ELECTRODE (SEE ALSO STYLE 1) |
| Reach Length | 0.460 INCHES NOMINAL IN |
| Body Style | UNSHIELDED, THREADED POST, TAPERED SEAT |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| R44TSX | General Motors Llc Dba General Motors (USA) |
| 666 PRIMARY | Allied-Signal Inc Autolite Div (USA) |
| ARF4-6 | Allied-Signal Inc Autolite Div (USA) |
| 4318136 PRIMARY | Chrysler Corp Engine and Components Sales Diversified Products Div (USA) |
| 5613935 | General Motors Corp Chevrolet Motor Div Special Products Dept (USA) |
| J8132552 | Chrysler Corp Engine and Components Sales Diversified Products Div (USA) |
| W-S-506 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| RBL-13Y6 | Champion Spark Plug Co Devilbiss Co (USA) |
| W-S-506 TY3CLA | General Services Administration Federal Supply Service (USA) |
| 5613577 | General Motors Corp Chevrolet Motor Div Special Products Dept (USA) |
| 14RF42-8 PRIMARY | Allied-Signal Inc Autolite Div (USA) |
| 5613572 | General Motors Corp Chevrolet Motor Div Special Products Dept (USA) |
| 8132552 | Am General Llc (USA) |
| RV12YC6 | Champion Aerospace Llc (USA) |
| RBL15Y4 | Champion Spark Plug Co Devilbiss Co Div (USA) |
| 8132552 | Kenosha Automotive Plant Sub of American Motors Corp (USA) |
| AC-R-44-TSX | General Motors Llc Dba General Motors (USA) |
| 8132552 | Chrysler Corp Engine and Components Sales Diversified Products Div (USA) |
| RBL15Y4 | Champion Aerospace Llc (USA) |
| R44TX | General Motors Llc Dba General Motors (USA) |
NSN 2920-01-145-6686 is a Spark Plug, manufactured by Allied-Signal Inc Autolite Div, classified under FSC 2920 (No Item Name Available). Status: cancelled.
NSN 2920-01-145-6686 has 25 cross-referenced part numbers: R44TSX (General Motors Llc Dba General Motors), 666 (Allied-Signal Inc Autolite Div), ARF4-6 (Allied-Signal Inc Autolite Div), 4318136 (Chrysler Corp Engine and Components Sales Diversified Products Div), 5613935 (General Motors Corp Chevrolet Motor Div Special Products Dept) and 20 more.
There are 5 known substitutes for 2920-01-145-6686: 2920-00-294-3892, 2920-01-038-1329, 2920-01-112-6237 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 666: Usage Design: ENGINE OTHER THAN AIRCRAFT; Width Across Flats: 0.625 INCHES NOMINAL IN; Features Provided: REGULAR TERMINAL NUT; Electrode Style: SINGLE GROUND ELECTRODE (SEE ALSO STYLE 1). 6 total characteristics are documented in the Federal Logistics Information System.
NSN 2920-01-145-6686 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.