The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-00-285-0501, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-285-0501 |
| Primary Part Number | S1656766 |
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Brush Spring Adjustability | ADJUSTABLE |
| Mounting Facility Quantity | 2 |
| Inside Width | 0.500 INCHES NOMINAL IN |
| Inside Length | 1.250 INCHES NOMINAL IN |
| Overall Thickness | 11.250 INCHES NOMINAL IN |
| Brush Quantity Accommodated Per Holder | 2 |
| Brush Pressure Spring Type Accommodated | SPIRAL TORSION |
| Mounting Facility | CLAMP AND ROD |
| Inside Thickness | 1.750 INCHES NOMINAL IN |
| Material | COPPER ALLOY BOX |
| 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 |
|---|---|
| S1656766 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 1JH642PC39 | 5/9 Secondary reference Westinghouse Electric Corp |
| 16C9933 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 1JH642PC39 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| S1656766 | 3/9 Design control — primary reference Westinghouse Electric Corp Control Business Unit |
| 16C9933 | 5/9 Secondary reference Westinghouse Electric Corp |
NSN 5977-00-285-0501 is a Holder,electrical Contact Brush, manufactured by Westinghouse Electric Corp, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-285-0501 has 1 manufacturer part number on file: S1656766 (Westinghouse Electric Corp).
Key specifications for S1656766: Brush Spring Adjustability: ADJUSTABLE; Mounting Facility Quantity: 2; Inside Width: 0.500 INCHES NOMINAL IN; Inside Length: 1.250 INCHES NOMINAL IN. 10 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.