The Brush,electrical Contact, cataloged under National Stock Number 5977-00-577-8402, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-577-8402 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Length | 2.750 INCHES NOMINAL IN |
| Peripheral Speed | 8000 FEET PER MINUTE FT |
| Body Style | RECTANGULAR COMMUTATOR |
| Terminal Slot Width | 0.219 INCHES NOMINAL IN |
| Top Style | BEVELED FRONT |
| Shunt Position Designator | 1 AND 3 AND 7 AND 9 |
| Criticality Code Justification | MATT AND MDCL |
| Clip Type | NEMA HAMMER TYPE A |
| Style Designator | SPLIT |
| Material Document and Classification | NATIONAL ELECTRIC CARBON CO. GRADE SA-45 MFR REF SINGLE MATERIAL RESPONSE |
| Angle | 20.0 DEGREES NOMINAL |
| Brush Shunt Length | 4.500 INCHES NOMINAL ALL SHUNTS IN |
| Contact Face Style | BEVELED |
| Shunt Insulation Provision and Quantity | 4 UNINSULATED |
| Width | 1.250 INCHES NOMINAL IN |
| Bevel Angle | 15.0 DEGREES NOMINAL |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 STRAIGHT W/SLOT |
| Thickness | 0.750 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 | Y |
| Reference | Meaning |
|---|---|
| NEMAPUBCB1-1961 | 5/9 Secondary reference U.S. Government activity |
| PA4872A | 5/9 Secondary reference National Electrical Carbon Products, Inc. Div Electrical |
| 61001761 | 3/9 Design control — primary reference National Electrical Carbon Products, Inc. Div Electrical |
| RC24-4045N | 5/9 Secondary reference National Electrical Carbon Products, Inc. Div Electrical |
| MILB003743 | 4/1 Identification reference U.S. Government activity |
NSN 5977-00-577-8402 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-00-577-8402: Length: 2.750 INCHES NOMINAL IN; Peripheral Speed: 8000 FEET PER MINUTE FT; Body Style: RECTANGULAR COMMUTATOR; Terminal Slot Width: 0.219 INCHES NOMINAL IN. 19 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.