MIL-C-38999

Technical Characteristics

• Thread Direction

  right-hand and right-hand

• Overall Diameter

  1.750 inches nominal

• Environmental Protection

  moisture proof and salt water resistant and vibration proof

• Distance From Mounting Shoulder To Front Face

  0.915 inches nominal

• Mating End Quantity

  1

• Shell Type

  solid

• Nominal Thread Length

  0.219 inches

• Contact Surface Treatment

  gold

• Shell Surface Treatment Document And Classification

  qq-p-416 fed spec single treatment response

• Included Contact Type

  round pin

• Precious Material

  gold

• Thread Class

  2a and a2a

• Overall Length

  1.247 inches maximum

• Mounting Facility Thickness

  0.062 inches minimum and 0.125 inches maximum

• Threaded Device Type

  back shell and mounting bushing

• Contact Removability

  removable

• Polarization Method

  keyway or multiple keyway

• Insert Position In Deg

  342.0

• Connector Locking Method

  bayonet pin

• Thread Quantity Per Inch

  20 and a18

• Nominal Thread Size

  0.938 inches and 1.250 inches

• Terminal Location

  back

• Contact Material

  copper alloy

• Contact Surface Treatment Document And Classification

  mil-g-45204 mil spec single treatment response

• Terminal Type

  crimp

• Shell Material

  aluminum alloy

• Shell Surface Treatment

  cadmium

• Included Contact Quantity

  55

• Bushing Accommodation Hole Shape

  round

• Precious Material And Location

  contact surfaces gold

• Precious Material And Weight

  0.055 gold grains,troy

• Test Data Document

  81349-mil-c-38999 specification

• Thread Series Designator

  unef and unef

• Specification/Standard Data

  96906-ms27468 government standard