The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-00-077-2918, 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 Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5977-00-077-2918 |
| Primary Part Number | 22664-9 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems |
| Status | ACTIVE |
| FSC Application Data | CONTROL,RATE GYRO |
| Overall Diameter | 0.176 INCHES NOMINAL IN |
| Diameter | 0.082 INCHES NOMINAL IN |
| Mounting Configuration | SHAFT |
| Width | 0.030 INCHES NOMINAL IN |
| Contact Ring Quantity | 6 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 22664-9 PRIMARY | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA) |
| Reference | Meaning |
|---|---|
| 22664-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5977-00-077-2918 is a Ring Assembly,electrical Contact, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-077-2918 has 1 manufacturer part number on file: 22664-9 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems).
Key specifications for 22664-9: FSC Application Data: CONTROL,RATE GYRO; Overall Diameter: 0.176 INCHES NOMINAL IN; Diameter: 0.082 INCHES NOMINAL IN; Overall Length: 6.122 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.
NSN 5977-00-077-2918 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.