Quik-Tek Threaded Insert - 1/4-20x7.7

A simple way to add a strong, reusable metal thread to plastic and 3D-printed parts. This brass heat set insert melts neatly into a correctly sized hole, giving a machine screw something more dependable to bite into than bare plastic.

Why it works

• Creates a durable metal thread in plastic and 3D-printed parts
• Allows parts to be assembled and taken apart repeatedly without wearing out the plastic
• Knurled outer surface grips the surrounding material once it cools
• Helps reduce stripped threads compared with screws driven directly into printed plastic

Installation

Place the insert into a correctly sized hole, then use a heated tool such as a soldering iron to press it into position. The brass softens the surrounding plastic as it moves in, then locks firmly in place as the plastic cools and hardens.

Specifications

• Thread size: 1/4-20 UNC
• Length: 7.7 mm
• Material: Brass
• Quantity: Sold individually

Bare plastic threads are fine for prototypes. Finished products deserve better.