MIL-C-12520/12

Technical Characteristics

• Thread Series Designator

  unc

• Attachment Feature Length

  4.625 inches nominal

• Material

  steel, corrosion resisting

• Seal Type

  gasket

• Overall Diameter

  1.750 inches nominal

• Mounting Facility Type And Quantity

  1 threaded coupling

• Thread Quantity Per Inch

  20

• Thread Direction

  right-hand

• Surface Treatment

  black oxide

• Furnished Items

  bead chain

• Style Designator

  external threads w/chain or rope

• Eye Inside Diameter

  0.167 inches nominal

• Size Designation

  20

• Body Height

  0.625 inches maximum

• Nominal Thread Size

  0.250 inches

• Specification/Standard Data

  81349-mil-c-12520/12 government specification

• Thread Class

  2a

• Seal Material

  rubber

• Test Data Document

  81349-mil-c-12520 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

• ~1

  data on certain environmental and performanc