The Holder Assembly,electrical Conta, cataloged under National Stock Number 5977-01-505-7920, 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 Leidos Engineering & Sciences, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-505-7920 |
| Primary Part Number | BR4-1A09032-501 |
| Item Name | Holder Assembly,electrical Conta |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Leidos Engineering & Sciences, Llc |
| Status | ACTIVE |
| Holder Quantity Per Assembly | 1 |
| Brush Quantity Accommodated Per Holder | 1 |
| 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 |
|---|---|
| BR4-1A09032-501 PRIMARY | Leidos Engineering & Sciences, Llc (USA) |
| Reference | Meaning |
|---|---|
| BR4-1A09032 | D/9 Drawing number reference only Leidos Engineering & Sciences, Llc |
| BR4-1A08905 ITEM 2 | 5/1 Secondary reference Leidos Engineering & Sciences, Llc |
NSN 5977-01-505-7920 is a Holder Assembly,electrical Conta, manufactured by Leidos Engineering & Sciences, Llc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-505-7920 has 1 manufacturer part number on file: BR4-1A09032-501 (Leidos Engineering & Sciences, Llc).
Key specifications for BR4-1A09032-501: Holder Quantity Per Assembly: 1; Brush Quantity Accommodated Per Holder: 1; Special Features: (INAVY)HOLDER ASSY,ELEMENT;(DRAWING)POR HOLDER ASSY(BR4-1A09032); End Item Identification: REFERENCE CELL,OTRP. 2 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.