Tubing Connector Fittings, High Pressure, One Piece, 1/16, Carbon PEEK Endure, Black, Winged Head with 10-32 Screw Threads. Finger Tighten, ARE-Applied Research brand. 10/EA.
These "Male Nuts" are used to connect PEEK or Stainless Steel tubing in the high pressures zones of HPLC systems.
Fitting has a 15mm diameter knurled head that is "winged" for ease of generating torque, 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.