The Hirose TM21P-88P(22) is a translucent clear guide plate designed for use with TM21 series plugs. It serves as a mechanical alignment aid during mating, helping to guide the plug into the receptacle and reduce stress on the contacts. This accessory is specified for harness assembly or panel-mount applications where repeated blind-mate or high-vibration connections benefit from a positive lead-in.
This guide plate is made for TM21 plugs — the same series as the TM21P receptacle housings. It fits the plug shell profile and does not alter the electrical path; it simply adds a chamfered entry that centers the plug before the contacts engage. If you are building a TM21-based interconnect, this plate bolts onto the plug or panel cutout per the manufacturer's assembly drawing.