Bolts for temporary construction that can be used repeatedly. This eco-friendly bolt can reduce disposal costs. Large screw-thread pitch, which increases speed of work. Scratch-resistant screw structure. Size markings on bolt heads. Thick shaft structure to meet with shear stress strength standard.
Super PIASTA (The only one in the world, 2 kinds of stainless Bi-Metal Self-Drilling Screw)
The combination of two best advantages of stainless steel, which are used for the head and fastening shank, and martensitic stainless steel, which for the drill point and tapping shank. Super PIASTA is created for drilling stainless steel sheets efficiently by using SUS-420J2 stainless stell, which has high heat resistance for the drill point.
Greater Non-Loosening Effect & Weight Saving. Although an ordinary spring washer gives the locking effect mainly on split parts, 2 LOCK's spring reaction is forced equally in the ring, and resists turning to maximize non-loosening effect.