The Resistance Element, cataloged under National Stock Number 5905-00-643-7571, 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 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-643-7571 |
| Primary Part Number | 16990-7-4 |
| Item Name | Resistance Element |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Ward Leonard Ct Llc |
| Status | ACTIVE |
| Section Resistance Between Taps in Ohms | 0.124 AND 0.249 |
| Resistance Tolerance in Percent | -20.0 TO 20.0 |
| Electrical Resistance | 0.6215 OHMS |
| Tap Quantity | 2 |
| Terminal Quantity | 4 |
| Terminal Thickness | 0.016 INCHES IN |
| Terminal Type | SCREW |
| Terminal Length | 0.500 INCHES IN |
| Unit Type | RIBBON |
| Terminal Width | 0.438 INCHES IN |
| Mounting Configuration | TERMINAL MOUNTED |
| Width | 1.000 INCHES NOMINAL IN |
| Resistor Power Dissipation Rating in Watts | 1176.0 |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.00893 INCHES NOMINAL IN |
| 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 |
|---|---|
| 16990-7-4 PRIMARY | Ward Leonard Ct Llc (USA) |
NSN 5905-00-643-7571 is a Resistance Element, manufactured by Ward Leonard Ct Llc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-643-7571 has 1 manufacturer part number on file: 16990-7-4 (Ward Leonard Ct Llc).
Key specifications for 16990-7-4: Section Resistance Between Taps in Ohms: 0.124 AND 0.249; Resistance Tolerance in Percent: -20.0 TO 20.0; Electrical Resistance: 0.6215 OHMS; Tap Quantity: 2. 15 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.