The Brush,electrical Contact, cataloged under National Stock Number 5977-00-078-8570, 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 Federal Signal Corporation. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-078-8570 |
| Primary Part Number | K8442A028 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Federal Signal Corporation |
| Status | ACTIVE |
| Length | 0.562 INCHES NOMINAL IN |
| Terminal Diameter | 0.406 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Spring Free Length | 1.362 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Brush Shunt Length | 1.362 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Width | 0.250 INCHES NOMINAL IN |
| Material | CARBON |
| Terminal Type and Quantity | 1 ROUND CAP |
| Thickness | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| K8442A028 PRIMARY | Federal Signal Corporation (USA) |
| Reference | Meaning |
|---|---|
| 8442A28 | 5/9 Secondary reference U.S. Government activity |
| 8442A028 | 5/9 Secondary reference U.S. Government activity |
| 8442A028 | 5/9 Secondary reference Federal Signal Corporation |
NSN 5977-00-078-8570 is a Brush,electrical Contact, manufactured by Federal Signal Corporation, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-078-8570 has 1 manufacturer part number on file: K8442A028 (Federal Signal Corporation).
Key specifications for K8442A028: Length: 0.562 INCHES NOMINAL IN; Terminal Diameter: 0.406 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Shunt Position Designator: 5. 13 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.