The Ring,electrical Contact, cataloged under National Stock Number 5977-00-686-4857, 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 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-686-4857 |
| Primary Part Number | 544-0667-002 |
| Item Name | Ring,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Overall Diameter | 4.085 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Shape | DISK |
| Outside Diameter | 4.085 INCHES NOMINAL IN |
| Inside Diameter | 3.877 INCHES NOMINAL IN |
| Mounting Configuration | FOUR 0.125 IN. DIA MTG HOLES ON 3.125 IN. DIA BOLT CIRCLE IN |
| Precious Material and Location | EXTERNAL SURFACES SILVER |
| 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 |
|---|---|
| 544-0667-002 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| Reference | Meaning |
|---|---|
| 544-0667-002 | 5/2 Secondary reference U.S. Government activity |
NSN 5977-00-686-4857 is a Ring,electrical Contact, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-686-4857 has 1 manufacturer part number on file: 544-0667-002 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 544-0667-002: Overall Height: 0.062 INCHES NOMINAL IN; Overall Diameter: 4.085 INCHES NOMINAL IN; Precious Material: SILVER; Shape: DISK. 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.