The 280Pcs.M3 Alloy Steel Grade12.9 Hex Socket Cover Head Bolt Screw Nut Product Features 12.9 grade alloy steel material with oxidation surface has good strength of extension and corrosion resistance in many environments Ideal for use in confined areas as fixing component, industrial and construction fasteners Screws and nuts are well packed in 10 compartments and assorted in a transparent plastic box for convenient use and storage Cap head enables driving where it doesn't have sufficient space for wrenches Used for fasteners in home and office appliance, communication equipment, ship assembly or other machinery industry Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!