Prime-Line 9059581 Hex Bolts, 3/8 In.-16 X 1 In., Grade 304 Stainless, 25 Pack Hex bolts are one of the most common fasteners and can be used in a wide variety of applications. The 6 sided head makes them easy to install using a standard wrench or socket tool. Nuts and washers are not included, so will need to be purchased separately. Washers help to evenly distribute the load and should always be used under the bolt head and under the nut (just under the bolt head if installing into a threaded hole). Flat washers and finished/standard hex nuts work great for most applications, though if the bolt may be subject to excessive vibration, it is recommended that lock washers and lock nuts be used instead. Product Features Size: 3/8 inch-16 X 1 inch One of the most common and versatile fasteners Designed for use with a nut or a threaded hole of the same diameter and thread size Features a 6 sided head and can be fastened using a wrench or socket tool Nuts and washers not included 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!