2024 Pcs Metric Screw Assortment, Bolts And Nuts Assortment Metric Machine Screw Product Details Specifications: Features: Black Galvanizing Technology: Metric screw varieties are made of durable 10.9 grade alloy steel and have black galvanizing technology. They do not contain organic oil. They have clear threads, uniform stress and high strength.They can be used for a long time. Standardized Metric Size: M2 M3 M4 M5 bolts and nuts kit, each type of nut has four different lengths, a total of 16 common sizes, in line with the standardized metric system, and the average error is less than 0.01mm. Larger Quantity: 2020 pcs M2 M3 M4 M5 screws with nuts and washers combination, enough for daily needs, 4 hex wrenches customized for each size are provided in the kit to make the screws easier to use. Thickened Storage Box: Our metric machine screw assortment comes in a reinforced box with thickened retaining dividers to keep all components organized clearly labeled on inner and outer covers for easy storage and access,and comes with bubble film to ensure that transportation will not be damaged or scattered. Wide Applications: This metric bolts and nuts assortment can be widely used in 3D printers, classified instruments, meters, electronic products, household appliances and more, suitable for professionals, amateurs and repairers, it can meet your life repair needs. 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.