VTR11-18-4D
View detailed technical data, stock status, and sourcing information for: VTR11-18-4D
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Federal Supply Group
Electrical and Electronic Equipment Components
Federal Supply Classification
5990 Synchros and Resolvers
National Stock Number
5990-00-251-7822
Item Name Code
02072
Assigment Date
07/16/1969 (57 years ago)
standard round c body style, 0.9995 inches minimum and 1.0000 inches maximum shoulder diameter, 0.6245 inches minimum and 0.6250 inches maximum pilot diameter, 2.3560 inches nominal overall length, 1.0570 inches minimum and 1.0620 inches maximum flange diameter
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Body Style
- standard round c
- Shoulder Diameter
- 0.9995 inches minimum and 1.0000 inches maximum
- Pilot Diameter
- 0.6245 inches minimum and 0.6250 inches maximum
- Overall Length
- 2.3560 inches nominal
- Flange Diameter
- 1.0570 inches minimum and 1.0620 inches maximum
- Flange Thickness
- 0.0930 inches nominal
- Undercut Diameter
- 0.9750 inches nominal
- Undercut Width
- 0.0620 inches nominal
- Shaft Diameter
- 0.1198 inches minimum and 0.1200 inches maximum single shaft
- Shaft Length
- 0.5550 inches nominal single shaft
- Fragility Factor
- moderately rugged
- Maximum Temp Rise
- 20.0 celsius
- Body Size
- 11
- Rotor Input Voltage Rating In Volts
- 26.0 nominal
- Frequency In Hertz
- 400.0 nominal
- Rotor Input Current Rating
- 280.0 milliamperes maximum
- Rotor Input Electrical Power Rating
- 1.0 watts maximum
- Zss Impedance Magnitude In Ohms
- 3.40 minimum and 4.20 maximum
- Zss Impedance Angle In Deg
- 17.00 minimum and 24.00 maximum
- Phase Shift Angle In Deg
- 6.000 input to output maximum
- Spline Tooth Quantity
- 21 single shaft
- Receiver Error Angular Range In Minutes
- -60.0 to 60.0
- Torque Gradient Per Angular Deg
- 0.008 inch-ounces minimum
- Alignment Hole Quantity
- 4
- Pilot Length
- 0.0620 inches nominal
- Mounting Surface To Terminal End Distance
- 1.8010 inches nominal
- Spline Tooth Diametral Pitch
- 120 single shaft
- Shaft Thread Series Designator
- unf single shaft
- Shaft Thread Direction
- right-hand single shaft
- Shaft Thread Class
- 2a single shaft
- Body Material
- steel corrosion resisting
- Terminal Location
- rear
- Shaft Thread Length
- 0.2000 inches nominal single shaft
- Shaft Type
- spline w/threads single shaft
- Alignment Hole Depth
- 0.1250 inches minimum
- Transformation Ratio
- 0.454 stator to rotor nominal
- Alignment Hole Bolt Circle Diameter
- 0.8120 inches nominal
- Shaft Nominal Thread Size
- 0.190 inches single shaft
- Test Data Document
- "81349-mil-s-20708 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
- Terminal Type And Quantity
- 5 screw
- Specification/Standard Data
- 81349-mil-s-20708/5 government specification
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5990-00-538-5994 | No Name Available | 01/01/2009 |
| 5990-00-607-9787 | No Name Available | 11/25/1999 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 1359468 | Receiver Synchro |
| 26V-11TR4B | Receiver Synchro |
| 26V-11TR4C | Receiver Synchro |
| 26V11TR4B | Receiver Synchro |
| AS20708 | Receiver Synchro |
| M20708-5 | Receiver Synchro |
| M20708-5C001 | Receiver Synchro |
| M20708/5-001 | Receiver Synchro |
| M20708/5-01C | Receiver Synchro |
| MIL-S-20708/5 | Receiver Synchro |
| MIL-S-20708/5A | Receiver Synchro |
| SAE-AS20708/5 | Receiver Synchro |
| VTR11-18-4D | Receiver Synchro |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5990-00-251-7822?
The FSCG of the NSN 5990-00-251-7822 is 5990
Does the NSN 5990-00-251-7822 have a Schedule B code assigned?
Yes, the Schedule B code is 9014900000
Does NSN 5990-00-251-7822 require demilitarization?
Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).
Does NSN 5990-00-251-7822 contain precious materials?
Precious metal content is unknown
Does NSN 5990-00-251-7822 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5990-00-251-7822 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Wed, Jul 16, 1969
Professional Distribution
Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.
- ITAR Registered
- DDTC Registered
- HAZMAT Certified
- AS9120 Quality Standards
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Pricing
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In Stock
This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.
| Overhauled | 1 |
| New Surplus | 6 |
| New Material | 30 |
| Serviceable | 1 |
| Total | 38 |
Availability of this item was last updated on:
12/18/2025 07:12 AM EST.
Stock levels and pricing are subject to change.