The Brush,electrical Contact, cataloged under National Stock Number 5977-00-239-4105, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-239-4105 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Length | 0.719 INCHES NOMINAL IN |
| Terminal Diameter | 0.370 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.225 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE INC,GR H-6782 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 2.719 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Head Length | 0.094 INCHES NOMINAL IN |
| Brush Shunt Length | 1.000 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.302 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN |
| Material | GRAPHITE |
| Terminal Type and Quantity | 1 ROUND CAP W/EARS |
| Thickness | 0.183 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Head Diameter | 0.185 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 |
|---|---|
| A-6556 | 5/9 Secondary reference Zenith Radio Corp of Iowa |
| 01-06424G | 3/9 Design control — primary reference Morganite Inc |
| MB6424F | 5/9 Secondary reference Morganite Inc |
NSN 5977-00-239-4105 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-00-239-4105: Length: 0.719 INCHES NOMINAL IN; Terminal Diameter: 0.370 INCHES NOMINAL IN; Largest Outside Diameter: 0.225 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.