The Ring,electrical Contact Brush Ho, cataloged under National Stock Number 5977-00-028-6818, 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 General Electric Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5977-00-028-6818 |
| Primary Part Number | 149A441P1 |
| Item Name | Ring,electrical Contact Brush Ho |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Overall Diameter | 7.125 INCHES NOMINAL IN |
| Overall Thickness | 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Mounting Configuration | TWO 1/2 IN. W BY 2-1/4 IN. LG MTG SLOTS ON 3-3/32 IN. RADIUS SPACED 180 DEG APART IN |
| Material | PLASTIC MELAMINE |
| Usage Design | USED TO RETAIN BRUSH HODLER |
| 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 |
|---|---|
| 149A441P1 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 149A441P1 | 5/9 Secondary reference U.S. Government activity |
NSN 5977-00-028-6818 is a Ring,electrical Contact Brush Ho, manufactured by General Electric Company, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-028-6818 has 1 manufacturer part number on file: 149A441P1 (General Electric Company).
Key specifications for 149A441P1: Overall Diameter: 7.125 INCHES NOMINAL IN; Overall Thickness: 0.594 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN; Mounting Configuration: TWO 1/2 IN. W BY 2-1/4 IN. LG MTG SLOTS ON 3-3/32 IN. RADIUS SPACED 180 DEG APART IN; End Item Identification: MODEL 5LY177A1. 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.