The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-01-078-4131, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-078-4131 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Overall Diameter | 0.150 INCHES NOMINAL IN |
| Precious Material | GOLD |
| Precious Material and Weight | 0.040 GOLD GRAINS, TROY |
| Diameter | 0.081 INCHES NOMINAL IN |
| Mounting Configuration | CLAMP |
| Precious Material and Location | RINGS GOLD |
| Width | 0.030 INCHES NOMINAL IN |
| Contact Ring Quantity | 8 |
| 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 |
|---|---|
| AC258-8 | 5/9 Secondary reference U.S. Government activity |
| AC258-8S | 3/2 Design control — primary reference U.S. Government activity |
| 015-2902-080 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5977-01-078-4131 is a Ring Assembly,electrical Contact, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
Key specifications for 5977-01-078-4131: Overall Diameter: 0.150 INCHES NOMINAL IN; Precious Material: GOLD; Precious Material and Weight: 0.040 GOLD GRAINS, TROY; Diameter: 0.081 INCHES NOMINAL IN. 8 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.