5, M3 x 6 x 5, M4 x 4 x 6, M4 x 6 x 6, M4 x 8 x 6, M5 x 6 x 7, M5 x 10 x 7, M6 x 8 x 8, 1/4-20 x 12.7 x 8, total 300 pieces. Application: TW1TGOFT knurled nuts are designed for thermoplastics. EASY ASSEMBLY Insert the threaded nut into the hole and heat the nut with a soldering iron.
eBay