self tapping metal screws with chip clearing

{"cid":"91199727","title":"Roofing A4-80 Hex Head Self Tapping Metal Screws DIN913","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/5f\/bc94578a3bcee17fd92a6ce1ef20-200x200-1.jpg","attrs":{"Brand Name":"TOBO","Model Number":"8.8","Minimum Order Quantity":"20Kg","Delivery Time":"According to the order","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T","Supply Ability":"Max 150 tons\/month","Packaging Details":"Neutral packaging or customized packaging","Product name":"Self Tapping Wooden Roofing Metal Screw","Size":"M1.4-M100","Head type":"Hex Head","Material":"Carbon Steel,Stainless Steel,alloy steel,Brass,copper","Grade":"A2-70\/A4-80","Standard":"DIN","Surface treatment":"Zinc-plated,Zinc,hot galvanized,Plain or Zine-plated","Sample":"free of charge","Application":"Building,wood metal,Construction Projects"}}

{"cid":"91150155","title":"Stainless Steel Flat head Torx Tamper Proof Self-tapping Thread Cutting Screws","imgUrl":"https:\/\/img.chinax.com\/nimg\/22\/a0\/9ebcf83fda4e989bf83e319a24ee-200x200-1.jpg","attrs":{"Price":"0.012USD ~1.0USD","Brand Name":"Drolee","Model Number":"DRLTPSFTXTS17-1","Minimum Order Quantity":"20000 PCS","Delivery Time":"25-30 days after order confirmation","Certification":"ROHS, SGS, Material Report, ISO9001","Place of Origin":"China","Payment Terms":"T\/T, Paypal, Western Union","Supply Ability":"1,000,000 PCS\/month","Packaging Details":"Bulk packing or as you required","HS Code":"7318140090","Type":"Self-Tapping Screw \/ Tamper Proof Screw","Grade":"Stainless Steel 18-8, 304, A2, 316, A4","Finish":"Plain","Head Type":"Flat \/ CSK Head","Drive Type":"Pin-in Torx","Thread Type":"A, AB","Size":"#4 ~ #14, 2.9 ~ 6.3mm","Length":"5\/32\" ~ 4\", 4.0 ~ 100mm","Point Type":"Type 17"}}