PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12-37Synchro,control Transformer

Carbonara Labs Inc · NSN 5990-00-111-8601 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-111-8601 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-111-8601. Primary manufacturer part number: 12-37.
Features
  • Synchro,control Transformer — FSC 5990
  • Zso Impedance Angle in Deg: 80.70 NOMINAL
  • Stator Input Voltage Rating in Volts: 11.8 NOMINAL
  • Shaft Slot Width: 0.0250 INCHES NOMINAL SINGLE SHAFT IN
  • Shaft End Play Determining Weight: 16.0 OUNCES OZ
  • Shaft Type: ROUND, SLOTTED SINGLE SHAFT
  • Body Size: 11
  • Pilot Length: 0.0620 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Corrosion Resisting Body construction
General Description

The Synchro,control Transformer, cataloged under National Stock Number 5990-00-111-8601, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Carbonara Labs Inc. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-111-8601
Primary Part Number12-37
Item NameSynchro,control Transformer
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerCarbonara Labs Inc
StatusACTIVE
Zso Impedance Angle in Deg80.70 NOMINAL
Stator Input Voltage Rating in Volts11.8 NOMINAL
Shaft Slot Width0.0250 INCHES NOMINAL SINGLE SHAFT IN
Shaft End Play Determining Weight16.0 OUNCES OZ
Shaft TypeROUND, SLOTTED SINGLE SHAFT
Body Size11
Pilot Length0.0620 INCHES NOMINAL IN
Stator Input Current Rating21.0 MILLIAMPERES MAXIMUM
Shaft End Play0.0005 INCHES MINIMUM AND 0.0015 INCHES MAXIMUM IN
Zrs Impedance Magnitude in Ohms659.00 NOMINAL
Shaft Radial Play Determining Weight4.0 OUNCES OZ
Maximum Total Null Voltage Output in Millivolts Per Volt30.00
Terminal LocationREAR
MaterialSTEEL CORROSION RESISTING BODY
Actuator Friction Torque at Minus 55 Deg Celsius16.0 CENTIMETER-GRAMS NOMINAL CM
Mounting Surface to Terminal End Distance1.7340 INCHES MAXIMUM IN
Rotor DC Resistance in Ohms385.00 NOMINAL
Shaft Diameter0.1200 INCHES MAXIMUM SINGLE SHAFT IN
Zro Impedance Magnitude in Ohms3340.00 NOMINAL
Shaft Maximum Radial Play0.0010 INCHES IN
Pilot Diameter0.6250 INCHES MAXIMUM IN
Undercut Diameter0.9750 INCHES NOMINAL IN
Flange Thickness0.0930 INCHES NOMINAL IN
Length0.0620 INCHES NOMINAL SHOULDER IN
Undercut Width0.0500 INCHES NOMINAL IN
Body StyleSTANDARD ROUND C
Shoulder Diameter1.0000 INCHES MAXIMUM IN
Flange Diameter1.0620 INCHES NOMINAL IN
Schematic Diagram Designator1 Y-ROTOR, 1 STATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3439-00-060-2577 INTERCHANGEABLE
Heating Unit,electric Soldering
6210-00-249-4581 INTERCHANGEABLE
Lens,light
4920-00-494-75361237 INTERCHANGEABLE
Extension,lead Unshielded
Mission Systems Davenport Inc.
2520-00-766-22591669326 INTERCHANGEABLE
Clutch Assembly,friction
Chrysler Realty Company Llc Dba Daimler Chrysler
5930-00-883-6684684-536-9101 INTERCHANGEABLE
Switch,pressure
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
3110-00-899-2952 INTERCHANGEABLE
Retainer,ball,bearing
5945-00-907-3187414863-2 INTERCHANGEABLE
Relay,solid State
Raytheon Company Dba Raytheon
5895-01-129-8465182D1011-9 INTERCHANGEABLE
Panel,indicator
West Electronics Inc
5975-01-139-38601237 INTERCHANGEABLE
Bushing,strain Relief,cable
Heyco Inc Dba Heyco Products
6515-01-156-3390 INTERCHANGEABLE
Surgical Pack,disposable
Cross-Reference Index
Part NumberManufacturer
2RS901-3A Kearfott Corporation Div Guidance and Navigation Division (USA)
12-37 PRIMARY Carbonara Labs Inc (USA)
2RS901-3A Kearfott Corp Div Kearfott Corporation (USA)
Related Parts
3439-00-060-2577INTERCHANGEABLE
HEATING UNIT,ELECTRIC SOLDERING
6210-00-249-4581INTERCHANGEABLE
LENS,LIGHT
4920-00-494-7536INTERCHANGEABLE
EXTENSION,LEAD UNSHIELDED
1237
2520-00-766-2259INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
1669326
5930-00-883-6684INTERCHANGEABLE
SWITCH,PRESSURE
684-536-9101
3110-00-899-2952INTERCHANGEABLE
RETAINER,BALL,BEARING
5945-00-907-3187INTERCHANGEABLE
RELAY,SOLID STATE
414863-2
5895-01-129-8465INTERCHANGEABLE
PANEL,INDICATOR
182D1011-9
5975-01-139-3860INTERCHANGEABLE
BUSHING,STRAIN RELIEF,CABLE
1237
6515-01-156-3390INTERCHANGEABLE
SURGICAL PACK,DISPOSABLE
4820-01-227-1001INTERCHANGEABLE
VALVE,CHECK
123A-7PL4355
5930-01-303-8535INTERCHANGEABLE
SWITCH,ROTARY
10384

Frequently Asked Questions

What is NSN 5990-00-111-8601?

NSN 5990-00-111-8601 is a Synchro,control Transformer, manufactured by Carbonara Labs Inc, classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-111-8601?

NSN 5990-00-111-8601 has 3 cross-referenced part numbers: 2RS901-3A (Kearfott Corporation Div Guidance and Navigation Division), 12-37 (Carbonara Labs Inc), 2RS901-3A (Kearfott Corp Div Kearfott Corporation).

What NSN replaces 5990-00-111-8601?

There are 12 known substitutes for 5990-00-111-8601: 3439-00-060-2577, 6210-00-249-4581, 4920-00-494-7536 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12-37?

Key specifications for 12-37: Zso Impedance Angle in Deg: 80.70 NOMINAL; Stator Input Voltage Rating in Volts: 11.8 NOMINAL; Shaft Slot Width: 0.0250 INCHES NOMINAL SINGLE SHAFT IN; Shaft End Play Determining Weight: 16.0 OUNCES OZ. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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