The Synchro,control Transformer, cataloged under National Stock Number 5990-00-099-0699, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 29 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5990-00-099-0699 |
| Primary Part Number | M20708/79-02C |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Zrs Impedance Angle in Deg | 16.00 MINIMUM AND 20.00 MAXIMUM |
| Flange Diameter | 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0895 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.6870 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND A |
| Zrs Impedance Magnitude in Ohms | 830.00 MINIMUM AND 940.00 MAXIMUM |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Torque Gradient Per Angular Deg | 0.040 INCH-OUNCES MAXIMUM IN |
| Stator Input Current Rating | 23.0 MILLIAMPERES NOMINAL |
| Phase Shift Angle in Deg | 8.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2400 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 0.053 WATTS MAXIMUM |
| Terminal Location | REAR |
| Zso Impedance Angle in Deg | 76.00 MINIMUM AND 81.00 MAXIMUM |
| Shaft Length | 0.5500 INCHES NOMINAL SINGLE SHAFT IN |
| Specification/standard Data | 81349-MIL-S-20708/79 GOVERNMENT SPECIFICATION |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Zso Impedance Magnitude in Ohms | 444.00 MINIMUM AND 70.00 MAXIMUM |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 25.00 OUTPUT |
| Stator Input Voltage Rating in Volts | 10.2 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 30.00 |
| Shaft Slot Width | 0.0200 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 2.203 ROTOR TO STATOR NOMINAL |
| Pilot Length | 0.0620 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 |
|---|---|
| M20708/79-02C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| 26V-08CT4C/79-02C | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 26V-08CT4C | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 8CT380D68M | C/1 Advisory reference — outside the item-of-supply concept American Precision Industries, Inc Div Portescap Us |
| 26V-08CT4C | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MS20708-79D002 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS20708/79 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MIL-S-20708/79 | 5/9 Secondary reference U.S. Government activity |
| 26V-08CT4C | 5/1 Secondary reference U.S. Government activity |
| M20708/79-02C | 5/9 Secondary reference U.S. Government activity |
| M20708/79-002 | 5/9 Secondary reference U.S. Government activity |
| AS20708/79 | 5/1 Secondary reference Sae Customer Service Dept 2045 |
NSN 5990-00-099-0699 is a Synchro,control Transformer, manufactured by Sae International Dba Sae International, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-099-0699 has 1 manufacturer part number on file: M20708/79-02C (Sae International Dba Sae International).
2 possible matches (shared part number, not a government interchangeability claim): 5990-00-802-6998, 5990-00-881-1031. Verify interchangeability with system specifications before substitution.
Key specifications for M20708/79-02C: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Zrs Impedance Angle in Deg: 16.00 MINIMUM AND 20.00 MAXIMUM; Flange Diameter: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN. 29 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 5990-00-099-0699 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.