The Arm,electrical Contact Brush, cataloged under National Stock Number 5977-00-473-9002, 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 Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-473-9002 |
| Primary Part Number | EE166 |
| Item Name | Arm,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Shape | IRREGULAR |
| Surface Treatment | CADMIUM |
| Mounting Configuration | TWO 0.188 TO 0.191 IN. DIA MTG HOLES ON EA SIDE OF ARM,0.474 TO 0.484 IN. APART IN |
| Material | COPPER ALLOY |
| Usage Design | USED TO RETAIN BRUSH |
| 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 |
|---|---|
| EE166 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| EE166 | 5/9 Secondary reference Donallco Inc |
NSN 5977-00-473-9002 is a Arm,electrical Contact Brush, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-473-9002 has 1 manufacturer part number on file: EE166 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for EE166: Shape: IRREGULAR; Overall Length: 0.670 INCHES NOMINAL IN; Overall Width: 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN; Surface Treatment: CADMIUM. 5 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.