The Spark Plug, cataloged under National Stock Number 2920-00-540-8303, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 8 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-00-540-8303 |
| Primary Part Number | WS506 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Body Style | UNSHIELDED, THREADED POST, GASKET SEAT |
| Width Across Flats | 0.812 INCHES NOMINAL IN |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| Electrode Style | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| Nondefinitive Spec/std Data | 3 TYPE AND B CLASS |
| Reach Length | 0.750 INCHES NOMINAL IN |
| Pressure Rating | 190.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 195.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM MEAN EFFECTIVE LBS |
| Seat Major Diameter | 0.810 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2920-00-540-8303 is a Spark Plug, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 2920 (No Item Name Available). Status: active.
NSN 2920-00-540-8303 has 3 cross-referenced part numbers: WS506 (Federal Specifications Promulgated by General Services Administration Washington DC), RN5C (Champion Aviation Inc Automotive Div), N8 (Champion Aerospace Llc).
There are 6 known substitutes for 2920-00-540-8303: 5999-00-086-1353, 2920-00-816-9844, 5340-00-964-2557 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for WS506: Body Style: UNSHIELDED, THREADED POST, GASKET SEAT; Width Across Flats: 0.812 INCHES NOMINAL IN; Usage Design: ENGINE OTHER THAN AIRCRAFT; Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4). 8 total characteristics are documented in the Federal Logistics Information System.