NSN: 5935-00-105-5310

Technical Characteristics

• Thread Class

  2a

• Thread Direction

  right-hand

• Eye Inside Diameter

  0.162 inches minimum and 0.172 inches maximum

• Seal Material

  rubber

• Body Height

  0.625 inches maximum

• Size Designation

  20

• Mounting Facility Type And Quantity

  1 threaded coupling

• Surface Treatment

  black oxide

• Furnished Items

  bead chain

• Overall Diameter

  1.375 inches nominal

• Attachment Feature Length

  4.625 inches nominal

• Seal Type

  gasket

• Thread Quantity Per Inch

  20

• Nominal Thread Size

  0.250 inches

• Material

  steel

• Style Designator

  23a external threads w/chain or rope

• Test Data Document

  81349-mil-c-12520 specification

• Thread Series Designator

  unc

• Specification/Standard Data

  81349-mil-c-12520/12 government specification