The Gyroscope,displacement, cataloged under National Stock Number 6615-01-259-0673, is classified within Federal Supply Class 6615 (Automatic Pilot Mechanisms and Airborne Gyro Components) of the Instruments and Laboratory Equipment group. The manufacturer of record is Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6615-01-259-0673 |
| Primary Part Number | 50550 |
| Item Name | Gyroscope,displacement |
| FSC / FSG | 6615 / 66 — Automatic Pilot Mechanisms and Airborne Gyro Components |
| Manufacturer | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems |
| Status | ACTIVE |
| Axis Displacement Limitation in Deg | 360 DEGREE ROLL AND +82 DEGREE PITCH |
| Phase | SINGLE/THREE |
| Current Type | AC AND DC |
| Design Type | CAGEABLE |
| Shock Mount | PROVIDED |
| Sensing Output/signal Level Method | STANDARD SYNCHRO |
| Torqued Gimbal Quantity | 2 |
| Voltage in Volts | 115.0 OR 28.0 |
| Gimbal Torque Application Method | SYNCHRO MOTOR |
| Freedom Axis Quantity | 2 |
| Temp Control Method | EXTERNALLY APPLIED |
| Unit Type | DIRECTIONAL |
| Direct Current Rating in Amps | 2.0 |
| Gimbal Quantity | 2 |
| Wheel Power Method | ELECTRIC |
| Instrument Type | UNFLOATED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 50550 PRIMARY | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA) |
| Reference | Meaning |
|---|---|
| MIL-G-83872 | 4/1 Identification reference U.S. Government activity |
| SBU-23A/A | 5/9 Secondary reference U.S. Government activity |
| SBU-23A/A | 5/1 Secondary reference U.S. Government activity |
NSN 6615-01-259-0673 is a Gyroscope,displacement, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 6615, Automatic Pilot Mechanisms and Airborne Gyro Components. Status: active.
NSN 6615-01-259-0673 has 1 manufacturer part number on file: 50550 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems).
3 possible matches (shared part number, not a government interchangeability claim): 6615-01-326-4636, 6615-01-434-5751, 5340-01-526-1955. Verify interchangeability with system specifications before substitution.
Key specifications for 50550: Overall Height: 6.500 INCHES NOMINAL IN; Axis Displacement Limitation in Deg: 360 DEGREE ROLL AND +82 DEGREE PITCH; Phase: SINGLE/THREE; Current Type: AC AND DC. 16 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 6615-01-259-0673 has DEMIL Code D. 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.