The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-01-503-7320, 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 Carlisle & Finch Co. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-503-7320 |
| Primary Part Number | 4904X |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Carlisle & Finch Co |
| Status | ACTIVE |
| Surface Treatment | COPPER RING |
| Contact Ring Quantity | 3 |
| 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 |
|---|---|
| 4904X PRIMARY | Carlisle & Finch Co (USA) |
| Reference | Meaning |
|---|---|
| 3189-1 REV B PC NO.8 | D/9 Drawing number reference only Carlisle & Finch Co |
| PL3189-1 REV B PC NO.8 | D/9 Drawing number reference only Carlisle & Finch Co |
| 4904X REV A | D/9 Drawing number reference only Carlisle & Finch Co |
NSN 5977-01-503-7320 is a Ring Assembly,electrical Contact, manufactured by Carlisle & Finch Co, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-503-7320 has 1 manufacturer part number on file: 4904X (Carlisle & Finch Co).
Key specifications for 4904X: Surface Treatment: COPPER RING; End Item Identification: BEACON,ROTARY; Contact Ring Quantity: 3. 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.