Hexagon Head Bolt And Serrated Lock Washer internal Teeth Assemblies
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.
Standard : ISO,GB,DIN,JIS,ANSI,BSW,IFI
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.