(10 Sets) 1/4-20X2-1/2" Stainless Steel Hex Head Screws Bolts, Nuts, Flat Lock Product Details A Hexagon Bolt is a threaded fastener with a hexagonal head shape, and are designed to be installed using a spanner. Hexagon bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts are also generally available in larger sizes than alternative fasteners. As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together. Made from 18-8 stainless steel, Fullerkreg? brand screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Screws that meet ASME specifications comply with these dimensional standards.DIMENSIONS: Diameter: 1/4" | Length: 2-1/2" | Thread Type: 20 tpi Coarse Thread (Standard) Package includes ten each of bolts, hex nuts , Flat Lock washers 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.