M5 Diameter Female Thread Nylon Hex Domed Cap Acorn Nuts Black 50pcs

Features:made from nylon material dome head cap acorn hex nuts black. It is a nut that has a domed top to cover the threads. This is to prevent contact with the external thread to protect the threads or protect other things the threads would rub against. Aesthetic sophistication can play a good role in decoration. To prevent being threaded scrape.