The Synchro, cataloged under National Stock Number 5990-01-178-5091, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Mpc Products Corporation Dba Woodward Mpc, Inc.. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Synchro |
| FSC / FSG | 5990 — Synchros and Resolvers (FSG 59) |
| Manufacturers | Mpc Products Corporation Dba Woodward Mpc, Inc. (CAGE 19710); The Boeing Company Div Legacy Am&m (CAGE 43999) |
| Parameter | Value |
|---|---|
| NSN | 5990-01-178-5091 |
| Primary Part Number | 155-L99A |
| Item Name | Synchro |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Mpc Products Corporation Dba Woodward Mpc, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 155-L99A PRIMARY | Mpc Products Corporation Dba Woodward Mpc, Inc. (USA) |
| L431C2032-1 | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| L99-A | 5/9 Secondary reference Mpc Products Corporation Dba Woodward Mpc, Inc. |
NSN 5990-01-178-5091 is a Synchro, manufactured by Mpc Products Corporation Dba Woodward Mpc, Inc., classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-178-5091 has 2 manufacturer part numbers on file: 155-L99A (Mpc Products Corporation Dba Woodward Mpc, Inc.), L431C2032-1 (The Boeing Company Div Legacy Am&m).
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 5990-01-178-5091 has DEMIL Code Q. 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.