The Brush,electrical Contact, cataloged under National Stock Number 5977-00-178-8155, 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 Smith and Smith Aircraft Co. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-178-8155 |
| Primary Part Number | EE781M1 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Length | 0.563 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.156 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 0.563 INCHES NOMINAL IN |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE INC,GR EG11 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 1.250 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Head Length | 0.125 INCHES NOMINAL IN |
| Brush Shunt Length | 1.500 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.250 INCHES NOMINAL IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 ROUND CAP W/EARS |
| Thickness | 0.250 INCHES NOMINAL IN |
| Head Diameter | 0.188 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 |
|---|---|
| EE781M1 PRIMARY | Smith and Smith Aircraft Co (USA) |
NSN 5977-00-178-8155 is a Brush,electrical Contact, manufactured by Smith and Smith Aircraft Co, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-178-8155 has 1 manufacturer part number on file: EE781M1 (Smith and Smith Aircraft Co).
Key specifications for EE781M1: Length: 0.563 INCHES NOMINAL IN; Largest Outside Diameter: 0.156 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Radius: 0.563 INCHES NOMINAL IN. 19 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.