What this pin socket accepts
The 1411-1 is a Keystone Electronics PCB pin socket in the Bulk package, designed to accept pin diameters from 0.015" to 0.021" (0.38 mm to 0.53 mm). The beryllium copper contact carries a 10.0 µin (0.25 µm) gold finish and terminates via solder into a 0.042" (1.07 mm) mounting hole. Overall length is 0.140" (3.56 mm) with a 0.055" (1.40 mm) flange diameter.
Pin diameter range and board fit
The 0.015" to 0.021" acceptance window covers common component leads and test pins — the 0.042" mounting hole gives the board layout engineer a defined drill size without guesswork.