The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-00-644-9683, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-644-9683 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| FSC Application Data | GENERATOR |
| Diameter | 5.000 INCHES NOMINAL IN |
| Surface Treatment | COPPER RING |
| Mounting Configuration | HUB KEYED ON SHAFT WITH 0.250 IN. BY 0.125 IN. KEYWAY IN |
| Width | 0.750 INCHES NOMINAL IN |
| Contact Ring Quantity | 2 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 32176 | 3/9 Design control — primary reference Marathon Electric, Llc |
NSN 5977-00-644-9683 is a Ring Assembly,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-00-644-9683: Overall Height: 4.500 INCHES NOMINAL IN; FSC Application Data: GENERATOR; Diameter: 5.000 INCHES NOMINAL IN; Overall Width: 6.250 INCHES NOMINAL IN. 6 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.