Hex Bolt Hex Head Bolts Non Slippery For Heavy Duty Fastening Machine For Construction Industry Feature:1. The thread is deep, complete, neat and clear, and the strength is even, not easy to slip, and does not deform.2. Small size, lightweight, practical, easy to carry, simple to use, and convenient to store.3. These hex head bolts are strong, have good performance, and have a high strength of 12.9.4. Using advanced manufacturing technology, the screws are easy to install, not easy to corrode, and not easy to wear.5. Made of high-quality materials, these hex head screws are strong, durable, and have a long service life. Specification:Item Type: Hex Head ScrewsMaterial: Alloy SteelModel: M3Screw Length: 4-20mmPacking List:300 x Hex Head Screws (20 x M3*4, 20 x M3*5, 20 x M3*6, 20 x M3*820 x M3*10, 20 x M3*12, 20 x M3*14, 20 x M3*16, 20 x M3*20, 120 x M3Nut) 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.