The Synchro,differential Receiver, cataloged under National Stock Number 5990-01-138-8981, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is American Precision Industries, Inc Div Portescap Us. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-138-8981 |
| Primary Part Number | 11DTR-300-A-57 |
| Item Name | Synchro,differential Receiver |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | American Precision Industries, Inc Div Portescap Us |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 1.0620 INCHES MAXIMUM IN |
| Undercut Width | 0.0500 INCHES NOMINAL IN |
| Shaft Diameter | 0.1200 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.9800 INCHES MAXIMUM IN |
| Length | 0.0620 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND C |
| Shaft Radial Play Determining Weight | 4.0 OUNCES OZ |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Torque Gradient Per Angular Deg | 5500.0 MILLIMETER-MILLIGRAMS NOMINAL MM |
| Shaft Maximum Runout | 0.0010 INCHES IN |
| Mounting Surface to Terminal End Distance | 1.3700 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Shaft End Play Determining Weight | 8.0 OUNCES OZ |
| Shaft Maximum Radial Play | 0.0010 INCHES IN |
| Shaft Length | 0.3130 INCHES NOMINAL SINGLE SHAFT IN |
| Body Material | ALUMINUM |
| Pilot Diameter | 0.6250 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.0000 INCHES MAXIMUM IN |
| Stator Input Voltage Rating in Volts | 10.0 NOMINAL |
| Shaft Slot Width | 0.0650 INCHES MINIMUM SINGLE SHAFT IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Electrical Error Angular Range in Minutes | -60.0 TO 60.0 |
| Terminal Type and Quantity | 4 WIRE LEAD |
| Shaft End Play | 0.0030 INCHES MINIMUM AND 0.0050 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 11DTR-300-A-57 PRIMARY | American Precision Industries, Inc Div Portescap Us (USA) |
| 4000-0072 | Lilbern Design of Virginia Llc (USA) |
NSN 5990-01-138-8981 is a Synchro,differential Receiver, manufactured by American Precision Industries, Inc Div Portescap Us, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-138-8981 has 2 manufacturer part numbers on file: 11DTR-300-A-57 (American Precision Industries, Inc Div Portescap Us), 4000-0072 (Lilbern Design of Virginia Llc).
Key specifications for 11DTR-300-A-57: Body Size: 11; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 1.0620 INCHES MAXIMUM IN; Undercut Width: 0.0500 INCHES NOMINAL IN. 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.
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.