The Brush,electrical Contact, cataloged under National Stock Number 5977-00-227-6500, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-227-6500 |
| Primary Part Number | 65-758720-400-5-01 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Helwig Carbon Products Inc |
| Status | ACTIVE |
| Length | 2.000 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 2.280 INCHES NOMINAL IN |
| Terminal Hole Diameter | 0.344 INCHES NOMINAL IN |
| Top Style | BEVELED FRONT |
| Shunt Position Designator | 13 |
| Style Designator | ONE PIECE |
| Material Document and Classification | NATIONAL CARBON CO,GR 549 MFR REF SINGLE MATERIAL RESPONSE |
| Angle | 30.0 DEGREES NOMINAL |
| Brush Shunt Length | 4.000 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Material | METAL GRAPHITE |
| Terminal Type and Quantity | 1 STRAIGHT W/HOLE |
| Thickness | 0.746 INCHES MINIMUM AND 0.750 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 |
|---|---|
| 65-758720-400-5-01 PRIMARY | Helwig Carbon Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 273H4D0D1 | 5/9 Secondary reference Liquid Air Corp Industrial Gases Div |
| 273H4D1 | 5/9 Secondary reference Liquid Air Corp Industrial Gases Div |
NSN 5977-00-227-6500 is a Brush,electrical Contact, manufactured by Helwig Carbon Products Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-227-6500 has 1 manufacturer part number on file: 65-758720-400-5-01 (Helwig Carbon Products Inc).
Key specifications for 65-758720-400-5-01: Length: 2.000 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Radius: 2.280 INCHES NOMINAL IN; Terminal Hole Diameter: 0.344 INCHES NOMINAL IN. 16 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.