The Ring,electrical Contact, cataloged under National Stock Number 5977-00-503-9517, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-503-9517 |
| Primary Part Number | 188283 |
| Item Name | Ring,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Overall Diameter | 3.188 INCHES NOMINAL IN |
| Material | SILVER |
| 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 |
|---|---|
| 188283 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 5977-00-503-9517 is a Ring,electrical Contact, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-503-9517 has 1 manufacturer part number on file: 188283 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 188283: Overall Diameter: 3.188 INCHES NOMINAL IN; Special Features: 0.234 IN. THK;CYLINDER SHAPE;LEAD MARK T-2, LEAD 4.375 IN. LG;FSC APPLICATION, GYRO COMPASS IN; Material: SILVER. 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.