The inserts nuts are made of carbon steel,make them have high hardness, wear resistance, smooth,non-slip without burr,can ensure long time using
You can drill a well-sized hole by using a drill bit,Make sure that threaded inserts is inserted vertically into the hole.Then screw the insert into the hole using the supplied hexagon wrench
Threaded inserts can be to repair filing cabinets, chair , headboards and footboards of wooden furniture
Insert size: 0.55" / 13.8mm, size: 0.4" / 10mm, threads size: 0.49" / 12.6mm; 5/16"-18x20mm-30PCS,with Black high speed steel twist drill and 8mm hex spanner
The inserts nuts works good for for soft woods of pine, plywood, fiberboard,work perfectly the furniture,also for hard ,solid , It is also well in high-grade furniture combination


