The Brush,electrical Contact, cataloged under National Stock Number 5977-00-366-1583, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-366-1583 |
| Primary Part Number | 10-621720-510-2-01 |
| 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 |
| Terminal Slot Width | 0.218 INCHES NOMINAL IN |
| Top Style | FLAT |
| Shunt Position Designator | 2 |
| Clip Type | NEMA HAMMER TYPE A |
| Style Designator | SPLIT |
| Material Document and Classification | HELWIG GRADE H45 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 4.000 INCHES NOMINAL ALL SHUNTS IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 2 UNINSULATED |
| Terminal Bend Angle | 30.0 DEGREES NOMINAL |
| Width | 1.745 INCHES NOMINAL IN |
| Material | CARBON |
| Terminal Type and Quantity | 1 BENT W/SLOT |
| Thickness | 0.622 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 |
|---|---|
| 10-621720-510-2-01 PRIMARY | Helwig Carbon Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 8820265 | 5/9 Secondary reference General Electric Company |
| PD4346 | 5/9 Secondary reference Carbon/graphite Group Inc the |
| PD-4556 | 5/9 Secondary reference Carbon/graphite Group Inc the |
NSN 5977-00-366-1583 is a Brush,electrical Contact, manufactured by Helwig Carbon Products Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-366-1583 has 1 manufacturer part number on file: 10-621720-510-2-01 (Helwig Carbon Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-368-2539. Verify interchangeability with system specifications before substitution.
Key specifications for 10-621720-510-2-01: Length: 2.000 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Terminal Slot Width: 0.218 INCHES NOMINAL IN; Top Style: FLAT. 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.