Product Name: Wing and Ribs Carbon Steel Zinc Plated Self Drilling Screw Furniture Screws Chipboard Screws Model NO.: 3.9mm etc Grade: 4.8-12.9 Standard: DIN, GB, SGS Head Style: Flat Head Connection: Common Bolt Groove: Cross Type: Countersunk Head Material: Carbon Steel and Stainless Steel Surface: Yellow Zinc,White Zinc Coating,Nickle etc Tail: Self-Drilling Special: Wing Rib: Under The Head Sample: Free MOQ: 2 Tons Delivery Time: 2-3 Weeks Trademark: OEM Transport Package: Bulk Packing, Small Box, Plastic Bag etc Specification: 3.5mm, 3.9mm etc Origin: Tianjin, China HS Code: 731815 Product Description Types of HeadsProductive Process:FAQ:Q1.What's your Hot sale products?A:Drywall screws,Chipboard screws,Truss Head screws,Hex head screws and other Specialscrews.Q2:What's your Delivery time?A:2-4 weeks.Or depends on our clients' quantity.We have our own annealing lines,so we can guarantee the delivery time.Q3:How do you guarantee the quality of your products?A:Our production manager has over 20 years production experience in Screws.andwe will test the screws before the loading.Q4:What's your payment terms?A:30%T/T prepayment and 70% T/T before the shipment.or L/C.Q5:What's your Nearest port?A:Tianjin port,China.Contact with us,hope to get your request!