The Synchro,transmitter, cataloged under National Stock Number 5990-01-033-7035, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 28 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-033-7035 |
| Primary Part Number | 051770 |
| Item Name | Synchro,transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | ROUND SINGLE SHAFT |
| Flange Diameter | 1.0620 INCHES MAXIMUM IN |
| Zss Impedance Magnitude in Ohms | 180.00 MINIMUM AND 250.00 MAXIMUM |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.1870 INCHES MINIMUM AND 0.1872 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.9750 INCHES NOMINAL IN |
| Length | 0.0690 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND C |
| Shaft Radial Play Determining Weight | 8.0 OUNCES OZ |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Torque Gradient Per Angular Deg | 0.008 INCH-OUNCES MINIMUM IN |
| Rotor Input Electrical Power Rating | 1.0 WATTS MAXIMUM |
| Alignment Hole Bolt Circle Diameter | 0.8120 INCHES NOMINAL IN |
| Phase Shift Angle in Deg | 6.000 INPUT TO OUTPUT MAXIMUM |
| Mounting Surface to Terminal End Distance | 1.8110 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 115.0 NOMINAL |
| Shaft End Play Determining Weight | 16.0 OUNCES OZ |
| Shaft Maximum Radial Play | 0.0006 INCHES IN |
| Alignment Hole Quantity | 4 |
| Shaft Length | 0.3120 INCHES NOMINAL SINGLE SHAFT IN |
| Body Material | STEEL CORROSION RESISTING |
| Pilot Diameter | 0.6250 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.0000 INCHES MAXIMUM IN |
| Alignment Hole Depth | 0.1250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 051770 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 887C051770 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
| 11TX4C(CP/B873) | 5/2 Secondary reference U.S. Government activity |
| 887C051770 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5990-01-033-7035 is a Synchro,transmitter, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-033-7035 has 1 manufacturer part number on file: 051770 (L3 Technologies, Inc. Div L3 Keo).
1 possible match (shared part number, not a government interchangeability claim): 6525-01-534-3384. Verify interchangeability with system specifications before substitution.
Key specifications for 051770: Body Size: 11; Shaft Type: ROUND SINGLE SHAFT; Flange Diameter: 1.0620 INCHES MAXIMUM IN; Zss Impedance Magnitude in Ohms: 180.00 MINIMUM AND 250.00 MAXIMUM. 28 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 5990-01-033-7035 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.