The Brush,electrical Contact, cataloged under National Stock Number 5977-00-121-1301, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-121-1301 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Outer Edge to Slot Edge Distance | 0.438 INCHES NOMINAL IN |
| Length | 2.218 INCHES MINIMUM AND 2.282 INCHES MAXIMUM IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 4.719 INCHES MINIMUM AND 4.781 INCHES MAXIMUM IN |
| Terminal Slot Width | 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN |
| Top Style | FLAT WITH RECTANGULAR SLOT |
| Shunt Position Designator | 8 |
| Style Designator | ONE PIECE |
| Material Document and Classification | HELWIG CARBON PRODUCTS INC,GR 4029 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 4.000 INCHES MINIMUM AND 4.250 INCHES MAXIMUM SINGLE SHUNT IN |
| Contact Face Style | CONCAVE ON BEVEL |
| Slot Depth | 0.062 INCHES NOMINAL IN |
| Width | 1.360 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 STRAIGHT W/SLOT |
| Slot Width | 0.500 INCHES NOMINAL IN |
| Thickness | 0.496 INCHES MINIMUM AND 0.500 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 |
| Reference | Meaning |
|---|---|
| B9583-1 | 3/9 Design control — primary reference Emerson Electric Co Emerson Industrial Controls Div DC Motor Plant P O Box 4147 St Louis Mo 63136-0747 |
NSN 5977-00-121-1301 is a Brush,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-00-121-1301: Outer Edge to Slot Edge Distance: 0.438 INCHES NOMINAL IN; Length: 2.218 INCHES MINIMUM AND 2.282 INCHES MAXIMUM IN; Body Style: RECTANGULAR COMMUTATOR; Radius: 4.719 INCHES MINIMUM AND 4.781 INCHES MAXIMUM IN. 17 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.