09 Ago binifiMux 130Pcs Black Nylon Inserted Hex Self Locking Nuts Assortment Kit,M3…
30pcs ---- M3 x 0.5mm. Nylon lock nut is a round nut, and in its outer open four small slot, you can use the crescent wrench screw on the stud, the lock nut should be equipped with a shaft Washer, it can be used to...