3/8" long threaded steel insert.
Outer thread 5/16-18, inner thread 10-24
How To Install WL-Wire Surface Mounts
WL Wire is an elegant wire and rod suspension system designed around 3/16″ stainless steel wire. This hardware is best for suspending lightweight applications from any flat or angled surface.This product line consists of wire and rod mounts, connectors, shelving components and clips. Machined from American aircraft-grade aluminum, WL Wire products are a sophisticated selection of mounting hardware.