The Brush,electrical Contact, cataloged under National Stock Number 5977-00-388-0571, 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 Eaton Aerospace, Llc Dba Jackson South. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-388-0571 |
| Primary Part Number | 33A57-1 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Length | 1.313 INCHES NOMINAL IN |
| Terminal Diameter | 0.406 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.280 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | UNION CARBIDE CORP,GR F28 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 2.500 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Head Length | 0.063 INCHES NOMINAL IN |
| Brush Shunt Length | 2.125 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.250 INCHES NOMINAL IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 ROUND CAP |
| Thickness | 0.250 INCHES NOMINAL IN |
| Head Diameter | 0.240 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 |
|---|---|
| 33A57-1 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| RC08-0814 | 5/9 Secondary reference Ucar Carbon Co Inc |
| RC08-0814 | 5/9 Secondary reference National Electrical Carbon Products, Inc. Div Electrical |
| NEMAPUBCB1-1961 | 5/9 Secondary reference U.S. Government activity |
NSN 5977-00-388-0571 is a Brush,electrical Contact, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-388-0571 has 1 manufacturer part number on file: 33A57-1 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for 33A57-1: Length: 1.313 INCHES NOMINAL IN; Terminal Diameter: 0.406 INCHES NOMINAL IN; Largest Outside Diameter: 0.280 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.