The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-00-032-0377, 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 Firstmark Aerospace Corp. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 — Electrical Contact Brushes and Electrodes (FSG 59) |
| Manufacturers | Firstmark Aerospace Corp (CAGE 3BMV1) |
| Parameter | Value |
|---|---|
| NSN | 5977-00-032-0377 |
| Primary Part Number | 306508 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Firstmark Aerospace Corp |
| 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 |
|---|---|
| 306508 PRIMARY | Firstmark Aerospace Corp (USA) |
| Reference | Meaning |
|---|---|
| 306508 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International |
| 306508 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| 306508 | 5/2 Secondary reference U.S. Government activity |
| 306508 | 5/9 Secondary reference U.S. Government activity |
NSN 5977-00-032-0377 is a Ring Assembly,electrical Contact, manufactured by Firstmark Aerospace Corp, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-032-0377 has 1 manufacturer part number on file: 306508 (Firstmark Aerospace Corp).
1 possible match (shared part number, not a government interchangeability claim): 3510-01-142-3000. Verify interchangeability with system specifications before substitution.
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.