The Brush,electrical Contact, cataloged under National Stock Number 5977-00-644-3191, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-644-3191 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Length | 2.250 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Terminal Slot Width | 0.219 INCHES NOMINAL IN |
| Top Style | FLAT |
| Shunt Position Designator | 8 |
| Style Designator | ONE PIECE |
| Material Document and Classification | UNION CARBIDE CORP,GRADE 549 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 4.500 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | BEVELED |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 1.250 INCHES NOMINAL IN |
| Bevel Angle | 24.0 DEGREES NOMINAL |
| Material | METAL GRAPHITE |
| Terminal Type and Quantity | 1 STRAIGHT W/SLOT |
| Thickness | 0.875 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 |
|---|---|
| 61041129 | 5/9 Secondary reference National Electrical Carbon Products, Inc. Div Electrical |
| RC28-4008 | 5/9 Secondary reference National Electrical Carbon Products, Inc. Div Electrical |
| MILB3743 | 4/1 Identification reference U.S. Government activity |
| 33640 | 5/9 Secondary reference Marathon Electric, Llc |
| RC28-4008 | 5/9 Secondary reference Ucar Carbon Co Inc |
| NEMA PUB CB1 | 3/1 Design control — primary reference National Electrical Mfrs Assn Dba Nema |
NSN 5977-00-644-3191 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-629-7549. Verify interchangeability with system specifications before substitution.
Key specifications for 5977-00-644-3191: Length: 2.250 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Terminal Slot Width: 0.219 INCHES NOMINAL IN; Top Style: FLAT. 15 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.