Hexagon Head Bolt And Serrated Lock Washer internal Teeth Assemblies

Group Sems Screw
Min. Order 1 piece
Terms of Payment all
Update Time 2019-06-06

Product Name  :  Hexagon Head Bolt And Serrated Lock Washer internal Teeth Assemblies

Material  :  Carbon steel,Iron,Stainless steel ,Brass copper,Alumilum,Zinc Alloy,Bronze

Specification  :  Including and over M2, the length according to customer's requirements

Manufacture Process  :  Cold forge heading/Secondary machine/Clamping/Threading/Surface treatment/(Automatic) testing/(Automatic) Packing/Shipping

Surface finishing  :  Zn-plated,Ni-plated,Passivated,H.D.G.(hot dip galvanizing),Chromate,Chorm plated,Blackoxide, Polish,Plain,Coppercoated,bronze plating,Dacromet,anodic oxidation etc.


Quality authentication  :  ISO 9001:2015, ISO/TS16949:2009, over 10 patents, the national high-tech enterprises.

Grade  :  4.8 6.8 8.8 10.9 12.9

Brand  :  Yuhuang

Thread  :  Coarse, fine

Used  :  Building industry machinery ,furniture

SEMS combines two normally seperate parts-typically a screw and a washer- into one permanently pre-assembled cost saving component. 

Washers are hel in place under the screw head by the rolled threads;
they will not fall off and are free to rotate.