The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-01-020-0771, 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 Kalmar AC Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-020-0771 |
| Primary Part Number | 4909244-8 |
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| Brush Spring Adjustability | NONADJUSTABLE |
| Mounting Facility Quantity | 2 |
| Terminal Quantity | 2 |
| Inside Width | 0.219 INCHES NOMINAL IN |
| Terminal Type | HOLE |
| Inside Length | 1.000 INCHES NOMINAL IN |
| Overall Thickness | 0.906 INCHES NOMINAL IN |
| Brush Quantity Accommodated Per Holder | 2 |
| Brush Pressure Spring Type Accommodated | HELICAL COMPRESSION |
| Mounting Facility | UNTHREADED HOLES |
| Inside Thickness | 0.344 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 |
|---|---|
| 4909244-8 PRIMARY | Kalmar AC Inc (USA) |
| Reference | Meaning |
|---|---|
| 1891567 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
NSN 5977-01-020-0771 is a Holder,electrical Contact Brush, manufactured by Kalmar AC Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-020-0771 has 1 manufacturer part number on file: 4909244-8 (Kalmar AC Inc).
Key specifications for 4909244-8: Brush Spring Adjustability: NONADJUSTABLE; Mounting Facility Quantity: 2; Terminal Quantity: 2; Inside Width: 0.219 INCHES NOMINAL IN. 11 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.