Machine & wood double thread bolt is the one side of the machine threaded and one side of wood threaded boltw, also known as stud wood screws and stud bolt, there is no specific reference standard in the international and domesticGenerally according to the specific requirements of customers to order, sometimes will be required with a hexagonal in the middle, so that to hexagon wrench or tools locking, sometimes will also be required to end with a slot or torx. Available in Stud bolt: 6*40/50/60/70/80/90/100/120/150 8*50/60/70/80/90100/110/120/130/140/150/160/180/200/220 10*50/60/70/80/90/100/110/120/130/140/150/160/180/200/220 12*100/120/140/160/180/200 Material: class 4.8, carbon steel Q195, 1008 Surface: white zinc, yellow zinc, blue zinc, H.D.G. Packing: 20KG-25KG/carton and then on pallet.
