The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-159-7572, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Servo Instrument Corporation. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-159-7572 |
| Primary Part Number | 20TW1-1595 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Servo Instrument Corporation |
| Status | ACTIVE |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 1.0 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 85.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Function Conformity Tolerance Per Section | -1.00 TO 1.00 SINGLE SECTION |
| Longitudinal Actuator Effective Electrical Stroke Length | 2.500 INCHES NOMINAL IN |
| Tap Location From Ccw Terminal Per Section in Ohms | 500.0 SINGLE SECTION |
| Mounting Method | STANDARD BUSHING |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Body Width | 1.250 INCHES NOMINAL IN |
| Body Height | 1.250 INCHES NOMINAL IN |
| Fixed Tap Quantity Per Section | 1 SINGLE SECTION |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -20.0 TO 20.0 SINGLE SECTION |
| Terminal Location | REAR END LOCATION NOT OTHERWISE SPECIFIED |
| Shaft Style | ROUND, THREADED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 3.875 INCHES NOMINAL IN |
| Body Length | 3.750 INCHES NOMINAL IN |
| Tap Location Tolerance Per Section | -10.0 TO 10.0 OHMS SINGLE SECTION |
| Power Dissipation Rating Per Section in Watts | 8.0 FREE AIR SINGLE SECTION |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Cubic Measure | 5.859 CUBIC INCHES |
| Longitudinal Actuator Travel | 2.625 INCHES NOMINAL IN |
| Resistance Tolerance Per Section in Percent | -10.0 TO 10.0 SINGLE SECTION |
| Terminal Type and Quantity | 4 TURRET |
| 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 |
|---|---|
| 20TW1-1595 | Servo Instrument Corporation (USA) |
| 55-155-007 | Samarius Precision Instruments, Inc. Dba Samarius Precision Instruments (USA) |
| Reference | Meaning |
|---|---|
| 20TW1-1595 | C/1 Advisory reference — outside the item-of-supply concept Gulf and Western Mfg Co Eagle Signal Div Sub of Gulf and Western Industries |
| 1002064-01 | 3/9 Design control — primary reference Raytheon Technical Services Company |
NSN 5905-01-159-7572 is a Resistor,variable,wire Wound,pre, manufactured by Servo Instrument Corporation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-159-7572 has 2 manufacturer part numbers on file: 20TW1-1595 (Servo Instrument Corporation), 55-155-007 (Samarius Precision Instruments, Inc. Dba Samarius Precision Instruments).
Key specifications for 20TW1-1595: Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 1.0 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 85.0 SINGLE SECTION; Section Quantity: 1. 30 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.