100Pcs M3 Thread Knurled Brass Threaded Heat Set Heat Resistant Insert Embedment
Used on injection moulding for tightly fixing.
No need to counterbore or countersink the boss hole because the insert has guide pilot.
All nuts are made of high quality brass, which has high hardness, no deformation, durable and reliable for long use.
Easy to install: From the moment that the insert has a valve conduit, there is no need to back-drill and counter-sink the hole.
Can be installed by ultrasonic or heat in tapered bore wire, or molded in during injection.

colour: gold
Material: brass

Package Contents:
100 x M3x5x4 Nuts