General description 230pcs M4 M5 M6 M8 M10 Hex Nuts with Threaded Inserts are designed for use in wood furniture and other applications requiring secure fastening. This insert nut assortment kit includes various sizes to meet different needs, ensuring versatility in your projects. Technical specifications Quantity: 230pcs Material: Zinc alloy Type: Hexagon Socket Head Cap Screws Product Weight: 390g Box Size: 17.3 x 9.8 x 2.3cm Sizes included: M4*8 (30pcs), M4*10 (60pcs), M5*10 (45pcs), M6*8 (18pcs), M6*10 (32pcs), M6*13 (13pcs), M6*15 (12pcs), M8*15 (10pcs), M8*20 (5pcs), M10*15 (3pcs), M10*25 (2pcs) Installation To install, drill the appropriate size hole and use a hex wrench for fastening. The tapered outer threads help prevent loosening due to vibration. Usage These insert nuts are suitable for soft woods such as pine, plywood, and fiberboard. A small hole must be drilled before installation to ensure proper fitting. Other information The surface of the nut thread is smooth