Tubing Connector Fittings, High Pressure, One Piece, 1/16", Carbon PEEK, Black, Small Head with 10-32 Screw Threads. Finger Tighten, ARE-Applied Research brand. 10/PK.
These "Male Nuts" are used to connect PEEK or Stainless Steel tubing in the high pressures zones of HPLC systems.
Fitting has a 10mm diameter knurled head, 21mm total length (top to bottom) with a 13mm thread length.
Carbon PEEK has been reinforced with carbon fiber, giving it the highest strength and stiffness of all the PEEK grades and improving its load-carrying capacity.