The Spark Plug, cataloged under National Stock Number 2920-00-656-4400, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 2920-00-656-4400 |
| Primary Part Number | 2227 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | Allied-Signal Inc Autolite Div |
| Status | CANCELLED |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 TYPE AND A CLASS |
| Reach Length | 0.500 INCHES NOMINAL IN |
| Body Style | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| Electrode Style | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| DC Resistance Rating in Ohms | 10000.0 NOMINAL |
| Pressure Rating | 125.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS |
| Top to Shield Thread Distance | 0.125 INCHES NOMINAL IN |
| Shield Thread Length | 0.250 INCHES NOMINAL IN |
| Terminal Sleeve Inside Diameter | 0.378 INCHES NOMINAL IN |
| Height Above Mounting Surface | 2.984 INCHES NOMINAL IN |
| Barrel Inside Diameter | 0.468 INCHES NOMINAL IN |
| Top to Terminal Contact Distance | 1.000 INCHES NOMINAL IN |
| Seat Major Diameter | 0.865 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 5/8-24 UNEF SHIELD |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| XED21 | Champion Aviation Inc Automotive Div (USA) |
| WS506 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 2227 PRIMARY | Allied-Signal Inc Autolite Div (USA) |
| XED21 | Champion Aerospace Llc (USA) |
| BR10S | Ford Motor Co General Parts Division (USA) |
NSN 2920-00-656-4400 is a Spark Plug, manufactured by Allied-Signal Inc Autolite Div, classified under FSC 2920 (No Item Name Available). Status: cancelled.
NSN 2920-00-656-4400 has 5 cross-referenced part numbers: XED21 (Champion Aviation Inc Automotive Div), WS506 (Federal Specifications Promulgated by General Services Administration Washington DC), 2227 (Allied-Signal Inc Autolite Div), XED21 (Champion Aerospace Llc), BR10S (Ford Motor Co General Parts Division).
There are 12 known substitutes for 2920-00-656-4400: 5331-00-173-3023, 6680-00-260-7378, 6810-00-264-3936 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2227: Width Across Flats: 0.875 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 2 TYPE AND A CLASS; Special Features: GRUMMAN AEROSPACE A-10 AIRCRAFT; Reach Length: 0.500 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 2920-00-656-4400 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.