ST4.2-18 X 22 Phillips Pan Head Self-Drilling Screw 316 Stainless Steel DIN7504N (4000pcs/Pkg) Inserts Nylon insert lock nuts are

Nylon insert lock nuts are designed with a nylon insert that grips the threads of the bolt

while the nylon insert grips the threads of the bolt

to enhance stability and prevent damage to surfaces

enabling reuse after maintenance

ensuring reliable fastening in automotive and industrial applications

ST4.2-18 X 22 Phillips Pan Head Self-Drilling Screw 316 Stainless Steel DIN7504N (4000pcs/Pkg) Inserts Nylon insert lock nuts areFender washers have a larger outer diameter to improve load distribution on thin surfaces, such as sheet metal. This design helps prevent damage and enhances the stability of fastened connections.