The Spark Plug, cataloged under National Stock Number 2920-00-571-6731, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 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 | 2920-00-571-6731 |
| Primary Part Number | 2344 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — No Item Name Available |
| Manufacturer | Allied-Signal Inc Autolite Div |
| Status | CANCELLED |
| Width Across Flats | 0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN |
| Body Style | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| Reach Length | 0.500 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 5/8-24 UNEF SHIELD |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| DC Resistance Rating in Ohms | 100.0 MINIMUM AND 1250.0 MAXIMUM |
| Pressure Rating | 230.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS |
| Height Above Mounting Surface | 2.875 INCHES NOMINAL IN |
| Top to Shield Thread Distance | 0.094 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Shield Thread Length | 0.375 INCHES NOMINAL IN |
| Seat Major Diameter | 0.785 INCHES MINIMUM AND 0.800 INCHES MAXIMUM IN |
| Top to Terminal Contact Distance | 1.235 INCHES MINIMUM AND 1.305 INCHES MAXIMUM IN |
| Barrel Inside Diameter | 0.505 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Terminal Sleeve Inside Diameter | 0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| Electrode Style | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| RML-12 | Champion Aviation Inc Automotive Div (USA) |
| RML-12 | Champion Aerospace Llc (USA) |
| 553086 | Renk America Llc Div Renk America (USA) |
| 2344 PRIMARY | Allied-Signal Inc Autolite Div (USA) |
| AVR3S | Ford Motor Craft (USA) |
| 8668752 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2920-00-571-6731 is a Spark Plug, manufactured by Allied-Signal Inc Autolite Div, classified under FSC 2920 (No Item Name Available). Status: cancelled.
NSN 2920-00-571-6731 has 6 cross-referenced part numbers: RML-12 (Champion Aviation Inc Automotive Div), RML-12 (Champion Aerospace Llc), 553086 (Renk America Llc Div Renk America), 2344 (Allied-Signal Inc Autolite Div), AVR3S (Ford Motor Craft) and 1 more.
There are 12 known substitutes for 2920-00-571-6731: 6810-00-290-6621, 3040-00-317-7046, 5310-00-465-6750 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2344: Width Across Flats: 0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM IN; Body Style: ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT; Reach Length: 0.500 INCHES NOMINAL IN; Thread Size and Series/type Designator: 5/8-24 UNEF SHIELD. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 2920-00-571-6731 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.