PreciSert Lightweight 1/4-28 locking

Overview

PreciSert lightweight inserts reduce mass and outside diameter while retaining key locking and a controlled installed height. They are aimed at assemblies where every gram counts and where the boss is sized by the housing design rather than by fastener load, such as portable instruments and airborne equipment. This listing: thread 1/4-28, standard Inch unified thread, material Stainless steel (300 series), finish Passivated, military standard MIL-I-45914 Rev A.

Advantages

Key locking is retained, so the mass saving does not come at the cost of rotation resistance during assembly or service.

Installed height remains controlled, so stack-height tolerances are preserved even with the reduced body.

Lower mass at the fastener location reduces the inertial load that the surrounding structure must carry, which compounds across hundreds of fasteners in an airframe or a portable instrument.

Reduced outside diameter allows installation into smaller bosses, so the housing wall can be thinner without changing the internal thread size.

Applications

Airborne instrument racks, portable test equipment, drone and UAV airframes, handheld medical devices, and any assembly where fastener mass appears in a weight budget.

Lightweight inserts carry less transverse stiffness than heavy-duty types. If the joint is subject to side load or vibration, verify the load path rather than assuming the insert can substitute one-for-one.

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