The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-085-9886, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is The Boeing Company Div Defense. 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. 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 | 5905-01-085-9886 |
| Primary Part Number | ST5M1538-003 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Body Diameter | 1.438 INCHES NOMINAL IN |
| Lateral Runout | 0.002 INCHES IN |
| Electrical Resistance Per Section | 5.000 KILOHMS ALL SECTIONS |
| Mounting Lip Depth | 0.0930 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 ALL SECTIONS |
| Undercut Width | 0.0730 INCHES NOMINAL IN |
| Section Quantity | 3 |
| Shaft Diameter | 0.125 INCHES NOMINAL IN |
| Undercut Diameter | 1.313 INCHES MAXIMUM IN |
| Function Characteristic Per Section | 1ST SECTION 360 DEG SINE-COSINE |
| Function Characteristic Per Section | 2ND SECTION 360 DEG SINE-COSINE |
| Function Characteristic Per Section | 3RD SECTION LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -0.05 TO 0.05 3RD SECTION |
| Function Conformity Tolerance Per Section | -2.00 TO 2.00 1ST SECTION |
| Function Conformity Tolerance Per Section | -2.00 TO 2.00 2ND SECTION |
| Tap Location From Ccw Terminal Per Section in Ohms | 2500.0 ALL SECTIONS |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 1.00 INCH-OUNCES IN |
| Fixed Tap Quantity Per Section | 1 ALL SECTIONS |
| Terminal Location | RADIALLY POSITIONED OVER MORE THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 1.4375 INCHES NOMINAL IN |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.750 INCHES NOMINAL IN |
| Pilot Diameter | 1.3125 INCHES MAXIMUM IN |
| Body Length | 1.610 INCHES NOMINAL IN |
| Shaft Runout | 0.001 INCHES IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Tap Location Tolerance Per Section | -10.0 TO 10.0 OHMS ALL SECTIONS |
| 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 |
|---|---|
| 71727 | General Dynamics Motion Control Llc (USA) |
| ST5M1538-003 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5905-01-085-9886 is a Resistor,variable,nonwire Wound,, manufactured by The Boeing Company Div Defense, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-085-9886 has 2 manufacturer part numbers on file: 71727 (General Dynamics Motion Control Llc), ST5M1538-003 (The Boeing Company Div Defense).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-191-4700. Verify interchangeability with system specifications before substitution.
Key specifications for ST5M1538-003: Body Diameter: 1.438 INCHES NOMINAL IN; Lateral Runout: 0.002 INCHES IN; Electrical Resistance Per Section: 5.000 KILOHMS ALL SECTIONS; Mounting Lip Depth: 0.0930 INCHES NOMINAL IN. 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.