The Resistor,fixed,wire Wound, cataloged under National Stock Number 5905-00-243-0721, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ward Leonard Ct Llc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-243-0721 |
| Primary Part Number | 18946 |
| Item Name | Resistor,fixed,wire Wound |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Ward Leonard Ct Llc |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -5.000 TO 5.000 |
| Body Diameter | 0.312 INCHES NOMINAL IN |
| Electrical Resistance | 4.000 KILOHMS |
| Inclosure Type | ENCAPSULATED |
| Terminal Type | TAB, SOLDER LUG |
| Terminal Length | 0.469 INCHES NOMINAL IN |
| Style Designator | RADIAL TERMINAL EACH END |
| Power Dissipation Rating in Watts | 8.000 FREE AIR |
| Ambient Temp at Full Rated Power | 40.0 CELSIUS DEGC |
| Body Length | 1.000 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius at Zero Percent Rated Power | 340.0 |
| Reliability Indicator | NOT ESTABLISHED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 308-0229-00 | Credence Systems Corp (USA) |
| 18946 PRIMARY | Ward Leonard Ct Llc (USA) |
| 57E4025T7 PRIMARY | Sprague Electric Co World Hqs (USA) |
| Reference | Meaning |
|---|---|
| 308-0229-00 | 5/9 Secondary reference U.S. Government activity |
NSN 5905-00-243-0721 is a Resistor,fixed,wire Wound, manufactured by Ward Leonard Ct Llc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-243-0721 has 3 manufacturer part numbers on file: 308-0229-00 (Credence Systems Corp), 18946 (Ward Leonard Ct Llc), 57E4025T7 (Sprague Electric Co World Hqs).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-300-5313. Verify interchangeability with system specifications before substitution.
Key specifications for 18946: Resistance Tolerance in Percent: -5.000 TO 5.000; Body Diameter: 0.312 INCHES NOMINAL IN; Electrical Resistance: 4.000 KILOHMS; Inclosure Type: ENCAPSULATED. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.