Carbon Steel Cap Nuts

Product  introduction

One end of the cap nut is a closed structure similar to a hat, which can cover the exposed part of the bolt when in use. Prevent the screw from rubbing, and can effectively prevent the intrusion of water and various corrosive substances, and slow down the speed of oxidation and rust of the screw.

Product information

Productname: Carbon Steel Cap Nuts

Grade:  4.8 8.8 10.9 12.9 

Surface treatment：Black oxide、Galvanized、Dacromet etc.

Material: Carbon Steel

Specification: M4 -M24

Standard:  GB/T923 DIN1587