The Spark Plug, cataloged under National Stock Number 2920-00-294-3746, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Woodstock Die Casting an Eltra Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-00-294-3746 |
| Primary Part Number | AR8S |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | Woodstock Die Casting an Eltra Co |
| Status | ACTIVE |
| Reach Length | 0.375 INCHES NOMINAL IN |
| Electrode Style | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| Thread Size and Series/type Designator | 5/8-24 UNEF SHIELD |
| DC Resistance Rating in Ohms | 10000.0 NOMINAL |
| Nondefinitive Spec/std Data | 1 TYPE AND A CLASS |
| Top to Terminal Contact Distance | 1.125 INCHES NOMINAL IN |
| Top to Shield Thread Distance | 0.125 INCHES NOMINAL IN |
| Height Above Mounting Surface | 2.625 INCHES NOMINAL IN |
| Terminal Sleeve Inside Diameter | 0.312 INCHES NOMINAL IN |
| Pressure Rating | 140.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS |
| Shield Thread Length | 0.375 INCHES NOMINAL IN |
| Seat Major Diameter | 0.775 INCHES MAXIMUM IN |
| Width Across Flats | 0.812 INCHES NOMINAL IN |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| Body Style | ELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 2920-00-294-3746 is a Spark Plug, manufactured by Woodstock Die Casting an Eltra Co, classified under FSC 2920 (No Item Name Available). Status: active.
NSN 2920-00-294-3746 has 2 cross-referenced part numbers: AR8S (Woodstock Die Casting an Eltra Co), WS506 (Federal Specifications Promulgated by General Services Administration Washington DC).
There is 1 known substitute for 2920-00-294-3746: 2920-00-817-8724. Verify interchangeability with system specifications before substitution.
Key specifications for AR8S: Reach Length: 0.375 INCHES NOMINAL IN; Electrode Style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4); Thread Size and Series/type Designator: 5/8-24 UNEF SHIELD; DC Resistance Rating in Ohms: 10000.0 NOMINAL. 15 total characteristics are documented in the Federal Logistics Information System.