The Brush,electrical Contact, cataloged under National Stock Number 5977-00-644-2909, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-644-2909 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Length | 1.500 INCHES NOMINAL IN |
| Peripheral Speed | 8000 FEET PER MINUTE FT |
| Body Style | RECTANGULAR COMMUTATOR |
| Terminal Slot Width | 0.281 INCHES NOMINAL IN |
| Top Style | FLAT WITH RIGHT SHOULDER |
| Shunt Position Designator | 10 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE INC,GRADE EG7788 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 4.000 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | BEVELED |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 1.500 INCHES NOMINAL IN |
| Bevel Angle | 10.0 DEGREES NOMINAL |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 STRAIGHT W/SLOT |
| Thickness | 0.625 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 |
| Reference | Meaning |
|---|---|
| SP50278CL1 | 3/2 Design control — primary reference U.S. Government activity |
| SP50278CL1 | 5/9 Secondary reference U.S. Government activity |
NSN 5977-00-644-2909 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-00-644-2909: Length: 1.500 INCHES NOMINAL IN; Peripheral Speed: 8000 FEET PER MINUTE FT; Body Style: RECTANGULAR COMMUTATOR; Terminal Slot Width: 0.281 INCHES NOMINAL IN. 16 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.