The Molex 1731120234 is a locking post accessory from the F-SGV and FCT series, designed specifically for use with D-Sub slide lock hardware. It carries an M3 thread and includes the mounting hardware in the package — the post itself plus the mating nut and washer, so you don't need to source those separately. The threaded portion below the head measures 0.236" (6.00 mm), and the total length below the head is 0.339" (8.61 mm), which sets the panel thickness range it can accommodate.
Thread Fit and Panel Engagement
The M3 thread is the standard size for D-Sub slide lock hardware across most manufacturers — it matches the threaded inserts in D-Sub backshells and hoods that accept a locking post. The 0.236" (6.00 mm) threaded portion below the head gives enough engagement for panel thicknesses up to about 6 mm before the nut bottoms out. The total 0.339" (8.61 mm) below-head length means the unthreaded shoulder provides clearance for the D-Sub connector body or slide lock mechanism before the thread starts.