100pcs M5 8mm x 7mm Brass Knurled Threaded Insert Embedment Nuts Stem Swivel Casters Lightweight: strong as metal but

Lightweight: strong as metal but only one fifth in weight

Outlet Hole Diameter: 20mm/ 0

Material: Carbon Steel

Each Set Includes 1 Half-Moon Nut

* No Load Current: 25mA

100pcs M5 8mm x 7mm Brass Knurled Threaded Insert Embedment Nuts Stem Swivel Casters Lightweight: strong as metal butDescriptions: 1. Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistance 2. The knurled insert nut has a guide, so no countersink is required. The surface is smooth, firm and even, and easy to install. 3. It can be installed into a plastic matrix by ultrasound or heat during the injection molding process. 4. Can be widely used in 3D printing injection molding to achieve tight