The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-100-8784, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International. Government technical data includes 29 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-100-8784 |
| Primary Part Number | 4028121 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Honeywell International Inc. Dba Honeywell International |
| Status | ACTIVE |
| Maximum Running Torque | 6.00 INCH-OUNCES IN |
| Body Diameter | 0.875 INCHES NOMINAL IN |
| Operating Position | START OF ROTATION |
| Screw Thread Quantity Per Inch | 32.0 |
| Undercut Length | 0.248 INCHES NOMINAL IN |
| Electrical Resistance Per Section | 5.000 KILOHMS 1ST SECTION AND 50.000 KILOHMS 2ND SECTION AND 5.000 KILOHMS 3RD SECTION |
| Switch Voltage Rating in Volts | 120.0 |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 150.0 ALL SECTIONS |
| Section Quantity | 3 |
| Shaft Diameter | 0.265 INCHES NOMINAL IN |
| Undercut Diameter | 0.187 INCHES NOMINAL IN |
| Nonturn Device Radius | 0.312 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Overall Diameter | 1.680 INCHES MAXIMUM IN |
| Mounting Method | STANDARD BUSHING |
| Maximum Starting Torque | 6.00 INCH-OUNCES IN |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -250.0 TO 250.0 ALL SECTIONS |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE |
| Features Provided | SWITCH |
| Shaft Style | ROUND, STEPPED |
| Actuator Type | DUAL CONCENTRIC |
| Shaft Length | 2.430 INCHES NOMINAL IN |
| Body Length | 2.100 INCHES MAXIMUM IN |
| Maximum Stop Torque | 80.00 INCH-OUNCES IN |
| Power Dissipation Rating Per Section in Watts | 0.65 FREE AIR ALL SECTIONS |
| Switch Type | ROTARY |
| Effective Electrical Rotation in Deg Angular Rotation | 300.0 NOMINAL |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| 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 |
NSN 5905-01-100-8784 is a Resistor,variable,nonwire Wound,, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-100-8784 has 3 manufacturer part numbers on file: 78FL4-206 (Honeywell International Inc Dba Honeywell International Div New England Instrument (nei)), 4028121 (Honeywell International Inc. Dba Honeywell International), 709-31 (Vishay Sprague Inc).
Key specifications for 4028121: Maximum Running Torque: 6.00 INCH-OUNCES IN; Body Diameter: 0.875 INCHES NOMINAL IN; Operating Position: START OF ROTATION; Screw Thread Quantity Per Inch: 32.0. 29 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.