The Brush,electrical Contact, cataloged under National Stock Number 5977-00-280-3267, 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 14 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-00-280-3267 |
| Primary Part Number | 11-377511-100-3-03 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Helwig Carbon Products Inc |
| Status | ACTIVE |
| Length | 1.125 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Terminal Hole Diameter | 0.188 INCHES NOMINAL IN |
| Top Style | FLAT WITH LEFT EDGE BEVELED |
| Shunt Position Designator | 2 |
| Style Designator | ONE PIECE |
| Material Document and Classification | HELWIG GRADE H35 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 2.625 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.750 INCHES NOMINAL IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 STRAIGHT W/HOLE |
| Thickness | 0.375 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 |
|---|---|
| 11-377511-100-3-03 PRIMARY | Helwig Carbon Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 5901-1391112ITEM6 | 5/9 Secondary reference U.S. Government activity |
| 513006 | 5/9 Secondary reference Western Sky Industries Inc Dba Electromech Techologies |
| 6301-3135825PC35 | 5/9 Secondary reference U.S. Government activity |
| 6301-3139793PC32 | 5/9 Secondary reference U.S. Government activity |
| 01-005130-006 | 5/9 Secondary reference Helwig Carbon Products Inc |
NSN 5977-00-280-3267 is a Brush,electrical Contact, manufactured by Helwig Carbon Products Inc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-280-3267 has 1 manufacturer part number on file: 11-377511-100-3-03 (Helwig Carbon Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-252-5176. Verify interchangeability with system specifications before substitution.
Key specifications for 11-377511-100-3-03: Length: 1.125 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Terminal Hole Diameter: 0.188 INCHES NOMINAL IN; Top Style: FLAT WITH LEFT EDGE BEVELED. 14 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.