Hex Socket Head Cap Screws Metric Thread Hexagon Allen Drive Machine Bolt Nuts Product Details Name: Hex Socket Head Cap Screws Size: M3 M4 M5 (Include M3 M4 M5 Nuts) Material: Alloy Steel , Package Quantity: 405Pcs Package Included: Socket Cap Screw: M3 X 8 ,20pcs Socket Cap Screw: M3 X 12 ,20pcs Socket Cap Screw: M3 X 16 ,20pcs Socket Cap Screw: M3 X 20 ,20pcs Socket Cap Screw: M3 Nuts ,80pcs Socket Cap Screw: M4 X 8 ,20pcs Socket Cap Screw: M4 X 12 ,20pcs Socket Cap Screw: M4 X 16 ,20pcs Socket Cap Screw: M4 X 20 ,15pcs Socket Cap Screw: M4 Nuts ,80pcs Socket Cap Screw: M5 X 8 ,15pcs Socket Cap Screw: M5 X12 ,15pcs Socket Cap Screw: M5 X 16 ,10pcs Socket Cap Screw: M5 X 20 ,10pcs Socket Cap Screw: M5 Nuts ,50pcs ?Materials??The socket head cap screws are alloy steel grade 12.9 which offers corrosion resistance. ?Size??Includes 405 Pcs, 12 Sizes, M2 M3 Hex Socket Head Cap Screws: M3 X 8mm ,M3 X 12mm ,M3 X 16mm ,M3 X 20mm ,M4 X 8mm ,M4 X 12mm ,M4 X 16mm ,M4 X 20mm ,M5 X 8mm ,M5 X12mm ,M5 X 16mm ,M5 X 20mm Widely Used In Different Applications ?Package?: All These Screws And Nuts Packed In A Sturdy Easy-Use Plastic Storage Case, Organized Conveniently And Easily ??????????? ??? ?????? ???????????? This Nut And Bolt Kit Are Widely Used In Precision Machinery,3D Printer, Mechanical Installation, Electronic Products, Household Appliances, Communication Products, 3D Printer Locks, Lamps, Lights, Toys, Etc. Socket Head Cap Screws Are Great To Have Around For Use In Wood And Wet Environments. 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.