The Brush,electrical Contact, cataloged under National Stock Number 5977-00-284-9440, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-284-9440 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Neck Length | 0.032 INCHES NOMINAL IN |
| Length | 0.313 INCHES NOMINAL IN |
| Body Style | CYLINDRICAL |
| Top Style | CYLINDRICAL HEAD WITH NECK |
| Style Designator | ONE PIECE |
| Material Document and Classification | READING ELECTRIC CO,GRADE Y25 MFR REF SINGLE MATERIAL RESPONSE |
| Diameter | 0.125 INCHES NOMINAL IN |
| Head Length | 0.063 INCHES NOMINAL IN |
| Contact Face Style | FLAT |
| Material | CARBON |
| Neck Diameter | 0.062 INCHES NOMINAL IN |
| Head Diameter | 0.093 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 |
|---|---|
| Y25 | 5/9 Secondary reference Reading Electric Co Inc |
| SCC104364-2 | 3/2 Design control — primary reference U.S. Government activity |
| HHT111 | 4/1 Identification reference U.S. Government activity |
NSN 5977-00-284-9440 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5970-00-504-6440, 4730-00-707-4728, 5820-00-917-2299. Verify interchangeability with system specifications before substitution.
Key specifications for 5977-00-284-9440: Neck Length: 0.032 INCHES NOMINAL IN; Length: 0.313 INCHES NOMINAL IN; Body Style: CYLINDRICAL; Top Style: CYLINDRICAL HEAD WITH NECK. 12 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.