“Self-tapping Screw”

Solar Bimetal Self-tapping Screw

Solar Bimetal Self-tapping Screw The Solar Bi-metal self-tapping screws with stainless steel 304 in head and Carbon Steel SCM 435 for drilling 0.5-2mm steel or aluminum.The stainless steel head are high level of corrosion protection and fast drilling on metal roof,it reduces ...