The Brush,electrical Contact, cataloged under National Stock Number 5977-00-421-2277, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-00-421-2277 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Length | 0.625 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL |
| Top Style | FLAT |
| Shunt Position Designator | 11 |
| Style Designator | ONE PIECE |
| Diameter | 0.187 INCHES NOMINAL IN |
| Brush Shunt Length | 0.750 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Material | COPPER |
| 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 |
|---|---|
| A-17220 | 3/9 Design control — primary reference Richards Imagery Interpretation Systems, L.l.c. |
NSN 5977-00-421-2277 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): 4720-01-197-6188. Verify interchangeability with system specifications before substitution.
Key specifications for 5977-00-421-2277: Length: 0.625 INCHES NOMINAL IN; Body Style: CYLINDRICAL; Top Style: FLAT; Shunt Position Designator: 11. 10 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.