M6 X 50Mm Hex Head Bolt By Color Galvanization With Nylon Lock Nut, 8Pcs Pack Product Details Thread Size: Diameter 6mm-1.0mm pitch, Length exclude head: 50mm; Partially thread. Material: Made of high quality Alloy steel to make Hex head bolts much more strength,durability, and reliability. Exterior finish: Color Galvanization to make surface more Resistant to Rust. there are no issues of biting death or thread damaging to compare with nonrust steel bolts in high and low temperature environments. Bolt, Nut and flat washer pack up together as one unit for conviences to end user with easy installation experiences. Nylon Insert Hex Lock Nut have more strong and long lifetime for full course thread clamping force to avoid loose; flat washer apply for increase fixing area with tightening. This Hex head bolt,nut and washer Assortment Kit following up with DIN standard and Our fasteners have passed many limit test requirements/quality control before selling out.they can widely use in different industries for fixing, please check the picture, size and self working condition clearly and choose right spec before you purchase it.please feel free to contact with us if you have any queries need our help.we will reply you soon and let your installation feeling more smoothly. 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.