The Brush,electrical Contact, cataloged under National Stock Number 5977-01-170-2603, 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 Helwig Carbon Products Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-170-2603 |
| Primary Part Number | 80-311291 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Helwig Carbon Products Inc |
| Status | ACTIVE |
| Length | 1.250 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 1.094 INCHES NOMINAL IN |
| Terminal Slot Width | 0.198 INCHES NOMINAL IN |
| Top Style | FLAT |
| Shunt Position Designator | 1 |
| Style Designator | ONE PIECE |
| Material Document and Classification | HELWIG CARBON GRADE 633 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 2.750 INCHES NOMINAL ALL SHUNTS IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 2 UNINSULATED |
| Width | 1.246 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 2 BENT W/SLOT |
| Thickness | 0.307 INCHES MINIMUM AND 0.311 INCHES MAXIMUM 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 |
|---|---|
| 80-311291 PRIMARY | Helwig Carbon Products Inc (USA) |
| Reference | Meaning |
|---|---|
| YP00433 | 5/9 Secondary reference Pacific Scientific Co Motor and Control Div |
NSN 5977-01-170-2603 is a Brush,electrical Contact, manufactured by Helwig Carbon Products Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-170-2603 has 1 manufacturer part number on file: 80-311291 (Helwig Carbon Products Inc).
Key specifications for 80-311291: Length: 1.250 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Radius: 1.094 INCHES NOMINAL IN; Terminal Slot Width: 0.198 INCHES NOMINAL IN. 15 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.