The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-01-237-9521, 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 Carbone of America Corporation Div Superior Carbon Products Division. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 — Electrical Contact Brushes and Electrodes (FSG 59) |
| Manufacturers | Mersen Canada Dn Ltd (CAGE 3AA07); Carbone of America Corporation Div Superior Carbon Products Division (CAGE 68256) |
| Parameter | Value |
|---|---|
| NSN | 5977-01-237-9521 |
| Primary Part Number | BC-4 (MOD) AND SP-4 |
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Carbone of America Corporation Div Superior Carbon Products Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| BC-4 (MOD) AND SP-4 | Mersen Canada Dn Ltd (CAN) |
| BC-4 (MOD) AND SP-4 PRIMARY | Carbone of America Corporation Div Superior Carbon Products Division (USA) |
| Reference | Meaning |
|---|---|
| 126115BC-4 AND SP-4 | 5/9 Secondary reference Carbone of America Corporation Div Superior Carbon Products Division |
| 126115BC-4 AND SP-4VM | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 126115VM | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 126115BC-4 AND SP-4 | 5/9 Secondary reference Mersen Canada Dn Ltd |
NSN 5977-01-237-9521 is a Holder,electrical Contact Brush, manufactured by Carbone of America Corporation Div Superior Carbon Products Division, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-237-9521 has 2 manufacturer part numbers on file: BC-4 (MOD) AND SP-4 (Mersen Canada Dn Ltd), BC-4 (MOD) AND SP-4 (Carbone of America Corporation Div Superior Carbon Products Division).
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.