The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-01-434-1968, 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 Lincoln Electric Holdings Inc. Government technical data includes 5 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 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 | 5977-01-434-1968 |
| Primary Part Number | K909-4 |
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Lincoln Electric Holdings Inc |
| Status | ACTIVE |
| Terminal Quantity | 1 |
| Inside Width | 250.000 INCHES NOMINAL IN |
| Terminal Type | CLAMP |
| Top Thread Location | INTERNAL |
| Style Designator | RECTANGLE |
| 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 |
|---|---|
| K909-4 PRIMARY | Lincoln Electric Holdings Inc (USA) |
NSN 5977-01-434-1968 is a Holder,electrical Contact Brush, manufactured by Lincoln Electric Holdings Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-434-1968 has 1 manufacturer part number on file: K909-4 (Lincoln Electric Holdings Inc).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-464-3657. Verify interchangeability with system specifications before substitution.
Key specifications for K909-4: Terminal Quantity: 1; Inside Width: 250.000 INCHES NOMINAL IN; Terminal Type: CLAMP; Top Thread Location: INTERNAL. 5 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.