Kadrick M2 M3 M4 M5 Screws Nuts And Washers Assortment, Grade, Anti Rust Upgrade Product Details ?Product details?---4sizes of screws M2 M3 M4 M5, thread pitch:0.4mm/0.5mm/0.7mm/0.8mm,thread diameters:2mm/3mm/4mm/5mm.Lenths of the thread M2:4mm/8mm/12mm/16mm.M3:6mm/8mm/12mm/16mm.M4:8mm/12mm/16mm/20mm.M5:8mm/12mm/16mm/20mm.According with standardized metric system. And the average error is less than 0.01mm. ?Anti Rust Upgrade? These black zink plated finish screws are not oily, they will not dirty your hands or DIY items, and the rust proof performance is better than other oiled screws. ?Good storage and assortment?All These Screws are Packed In a Sturdy Easy-use Plastic Storage Box, Organized Conveniently and Easily. ?High quality?--- 25 Years of experience in fastener design and production.Made of high quality 12.9 grade alloy steel , which features is strength and offers good corrosion resistance in bad environment. ?Can be widely used?Keep a set of commonly uesd Kadrick screw sets on hand to make you convenient. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.