300 tuercas moleteadas M2 M3 M4 M5 M6 con rosca interna, insertos roscados de latón, tuercas tipo inserto con insertos roscados, para mecanizado 3D de plástico.

Regarding the package contents: You will receive 300 M2, M3, M4, M5, and M6 internal thread serrated nuts. They are packaged in durable plastic and individually compartmentalized to prevent mixing, making them convenient for storage and use. Multiple sizes: Available in 15 sizes to meet your various needs. With this set of M2, M3, M4, M5, and M6 internal thread serrated nuts, you can choose the appropriate size. Superior materials: These threaded inserts are made of high-quality brass; robust and durable, the reliable materials and excellent workmanship ensure their performance, allowing for long-term peace of mind. Wide applications: These threaded inserts are ideal for injection molding, fastening, or other projects. (These internal thread serrated nuts require no back-drilling or countersinking).