The Resistor,variable,wire Wound,non, cataloged under National Stock Number 5905-01-138-5996, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Astronics Test Systems Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-138-5996 |
| Primary Part Number | 20-6557 |
| Item Name | Resistor,variable,wire Wound,non |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Astronics Test Systems Inc |
| Status | ACTIVE |
| Section Quantity | 1 |
| 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 |
|---|---|
| 20-6557 PRIMARY | Astronics Test Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 404/8/02857-1.5K | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5905-01-138-5996 is a Resistor,variable,wire Wound,non, manufactured by Astronics Test Systems Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-138-5996 has 1 manufacturer part number on file: 20-6557 (Astronics Test Systems Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6680-01-277-1581, 3120-01-304-2416, 5325-01-351-9364. Verify interchangeability with system specifications before substitution.
Key specifications for 20-6557: Section Quantity: 1; Reliability Indicator: NOT ESTABLISHED. 2 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.