This tall self-locking hex nut with a nylon insert is made from A4 stainless steel and features metric threading. Manufactured to DIN 982 and ISO 7040 standards, the nut includes a non-metallic locking element that helps prevent loosening caused by vibration or mechanical stress. Please note: self-locking stainless steel nuts are prone to thread galling, which can increase the risk of product failure. We recommend treating these nuts with a friction reducer or applying an anti-seize compound before installation.