The Brush,electrical Contact, cataloged under National Stock Number 5977-00-583-9092, 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 Dumore Corporation. Government technical data includes 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-583-9092 |
| Primary Part Number | R457-0530 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Dumore Corporation |
| Status | ACTIVE |
| Length | 0.688 INCHES NOMINAL IN |
| Terminal Diameter | 0.433 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.283 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 0.656 INCHES NOMINAL IN |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Spring Free Length | 1.375 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL WITH REDUCED END |
| Head Length | 0.047 INCHES NOMINAL IN |
| Brush Shunt Length | 1.125 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.313 INCHES NOMINAL IN |
| Material | CARBON GRAPHITE |
| Terminal Type and Quantity | 1 ROUND CAP W/EARS |
| Thickness | 0.219 INCHES NOMINAL IN |
| Head Diameter | 0.188 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 |
|---|---|
| R457-0530 PRIMARY | Dumore Corporation (USA) |
| Reference | Meaning |
|---|---|
| 56W17 | 5/9 Secondary reference Union Carbide Corp Sub of Dow Co the |
| 56W17 | 5/9 Secondary reference L-Tec Welding and Cutting Systems |
| NEMAPUBCB1-1961 | 5/9 Secondary reference U.S. Government activity |
| 56W17 | 5/2 Secondary reference U.S. Government activity |
NSN 5977-00-583-9092 is a Brush,electrical Contact, manufactured by Dumore Corporation, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-583-9092 has 1 manufacturer part number on file: R457-0530 (Dumore Corporation).
Key specifications for R457-0530: Length: 0.688 INCHES NOMINAL IN; Terminal Diameter: 0.433 INCHES NOMINAL IN; Largest Outside Diameter: 0.283 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR. 19 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.