Threaded inserts are internally threaded fasteners pre‑installed into a base material (such as plastic, wood, aluminum alloy, or soft metal) to provide high‑strength, wear‑resistant threads. Once installed, the insert becomes part of the workpiece, allowing repeated assembly and disassembly of bolts or screws without damaging the base material. Common types include: self‑tapping inserts (with cutting slots or knurling on the outer wall, can be screwed into plastic or wood holes), heat/ultrasonic inserts (with rings or patterns, installed by heat or ultrasonic energy), and press‑in inserts (with knurling or barbs, pressed directly into metal holes). They effectively solve the problem of insufficient thread strength in soft materials and improve connection reliability.
Customizable options:

Materials: Carbon steel (C1008/C1022), stainless steel (SS303/SS304/SS316), brass, copper, aluminum, etc.

Surface finishes: Electroplated zinc (blue/white, yellow, black), nickel plating, chrome plating, black oxide, phosphating, Dacromet, etc. (some plastic‑type inserts may be unfinished)

Insert types: Self‑tapping, heat‑stake, ultrasonic, press‑in, injection‑molded pre‑install, helical coil (thread insert)

Other variables: Thread size (M2–M10), outer diameter, overall length, wall thickness, number and distribution of cutting slots, knurling or barb dimensions can be manufactured to customer drawings.
Widely used in electronic device housings, automotive interior parts, medical equipment, furniture assembly, drones, and 3C products.