Product name : Helicoil Screw Thread Insert - Metric Coarse
Type : Thread Insert
Thread diameter ：1/4”-20，3/8”-16，
Thread pitch：20UNC，16UNC
Thread Insert Material : 304 Stainless Steel
***Nominal Length : Maximum drawing length after installation
***Size descriptions such as 1/4”-20 x 1.5D indicate:
***1/4” indicates that the diameter of the thread is 1/4in
***20 indicates thread pitch is 20UNC.
***1.5D indicates that the maximum stretch length after screw installation is 1.5 times the diameter. (1.5 x 1/4in = 3/8in)