121903MF

Technical Characteristics

• Thread Class

  2b

• Overall Length

  4.063 inches nominal

• Shaft Diameter

  0.250 inches nominal

• Individual Section Quantity

  3

• Longest Horizontal Distance Between Mounting Centers

  2.281 inches nominal

• Switch Contact Basic Design

  nonpile-up symmetrical

• Pole Quantity

  1

• Nominal Thread Size

  0.250 inches

• Contact Voltage Rating In Volts

  125.0

• Switch Actuator Momentary Position

  clockwise and counterclockwise

• Mounting Facility Pattern

  four position rectangular

• Switch Actuator Indexing Position Quantity

  3

• Shaft Type

  round,flatted,threaded hole

• Contact Switching Action

  makes before breaks

• Switch Actuator Positioning Increment

  90.0 degrees

• Switch Actuator Stop Device Type

  fixed stop

• Special Features

  item must comply with requirements of desc production standad no. l02564;for navy nuclear propulsion plant products only

• Thread Series Designator

  unc

• Hazardous Locations/Environmental Protection

  dustproof

• Overall Height

  3.000 inches nominal

• Overall Width

  3.000 inches nominal

• First Flat Length

  0.875 inches nominal

• Flat Height

  0.219 inches nominal

• Shaft Length

  2.250 inches nominal

• Knob Manufacturer Code

  82121

• Knob Manufacturer Part Number

  a

• Longest Vertical Distance Between Mounting Centers

  2.281 inches nominal

• Throw Quantity

  3

• Mounting Method

  bracket and threaded hole

• Features Provided

  actuator knob

• Thread Quantity Per Inch

  20

• Criticality Code Justification

  feat

• Terminal Type

  tab w/screw

• Contact Load Current Rating

  10.0 amperes resistive load