Imperial or inch thread sizes are specified by diameter and threads per inch. Diameter is also known as screw size. For those with a diameter smaller than 1/4", screw size is indicated by a number (e.g., #10 or No. 10). Metric thread sizes are specified by diameter and pitch, which is the space between threads.

Fasteners are pieces of hardware that mechanically join multiple materials or objects together. Bolts, screws, anchors, rivets, nails, spikes, and staples are inserted into or through a mounting surface and secure materials together through mechanical friction or with another fastener.

Thread inserts are used to replace damaged inserts, repair threaded holes that have been stripped, or create a new join. We offer several types suited for use on metal, wood, and plastic. Whereas the coil tension on helical thread inserts securely hold the insert in place, keylocking thread inserts have locking keys that are driven down to lock ...

2025年2月10日 · Molded-in inserts involve the most costly method for putting metal threads in plastic due to the required tooling associated with every new part but result in the best performance when comparing pull-out and torque-out resistance. A die used for injection molding is fitted with pins that meet the minor diameter of the insert.

Imperial or inch thread sizes are specified by diameter and threads per inch. Diameter is also known as screw size. For those with a diameter smaller than 1/4", screw size is indicated by a number (e.g., #10 or No. 10). Metric thread sizes are specified by diameter and pitch, which is the space between threads.

2025年2月10日 · To put metal threads in a thermoset, the best option is to use a molded-in insert (often a blind insert), with press-in inserts being a viable but lower-performance alternative. Thermoplastics can be re-melted or softened upon heating, allowing for post-mold installation of heat staking or ultrasonic inserts .

Shop Self-Locking Thread Inserts at Reid Supply 70+ years of expertise. Download 3D CAD models. Buy online with next day delivery.

Self-locking inserts install into a mounting surface and provide a female-threaded hole for installing male-threaded fasteners. They feature external threading with a pre-applied thread-locking compound that engages with the mounting surface and resists loosening from vibrations.

The insert distributes the load across the length of the threads and improves the threads' strength when a fastener with a standard screw thread size is screwed into the hole. Straight-flute STI taps move chips into the taps' flutes but do not evacuate the chips during threading.

If you use a self-locking (adhesive) threaded insert, you can also heat the thread to release the adhesive. Types of Threaded Inserts for Metal. Source: Reid Supply. The use of key locking threaded inserts for metal exceeds just the thread repair; they're great if you're working with thin materials that require a strong and durable fastener ...