PreciSert Heavy Duty 5/16-24 locking

Overview

PreciSert heavy-duty inserts are key-locking inserts built to a tighter dimensional envelope than general-purpose types, and the range includes variants referenced to military standards. The design intent is a repairable, rotation-locked thread where both the installed height and the radial position have to be predictable, as on aerospace and instrument assemblies where a protruding or skewed insert would interfere with mating hardware. This listing: thread 5/16-24, standard Inch unified thread, material Stainless steel (300 series), finish Passivated, military standard MIL-I-45914 Rev A.

Advantages

Key locking works in both directions, so the insert resists rotation during screw installation and during screw removal, which is where a bonded insert typically fails first.

Military-standard referenced variants give a documented material and finish baseline, which shortens qualification when the assembly itself has to meet a defence or aerospace specification.

The solid body carries load through its full length rather than through a coil, so pull-out strength is limited by the parent material rather than by the insert.

Tighter tolerances on insert length and shoulder position mean the installed thread sits at a known depth, so a mating part designed to a fixed stack height does not need shimming.

Applications

Aerospace instrument housings, defence electronics enclosures, avionics rack hardware, precision optical bench assemblies, and test equipment where installed height tolerance affects alignment.

When a military standard is quoted, confirm which revision applies — material and finish requirements have changed between revisions, and a certificate to the wrong revision will not be accepted at incoming inspection.

Product information is supplied by Toprecision. Custom parts can be produced to drawing — contact us for samples or a quotation.