If you're tired of running out of washers mid-project, this Wulankd 150-pack has you covered for all your hardware needs! These 1/4\ flat washers with 5/8\ outside diameter are perfect for countless applications around the house, workshop, or job site. Made from quality 18-8 (304) stainless steel, they offer excellent corrosion resistance and durability that outperforms cheap plated washers. The black oxide coating isn't just for looks - it provides an extra layer of protection against rust and corrosion, making these ideal for outdoor projects or high-moisture environments. The specifications are precise: inside diameter between 0.277-0.296 inches, outside diameter exactly 5/8 inch, and thickness ranging from 0.052-0.06 inches - perfect fit for 1/4\ and M6 bolts and fasteners. What's great about having 150 pieces is that you can tackle multiple projects without worrying about running short, and they're organized and ready when you need them. These washers distribute load effectively, preventing damage to surfaces and ensuring your bolted connections stay secure over time. Whether you're working on automotive repairs, furniture assembly, machinery maintenance, or DIY home improvements, having quality washers on hand makes everything go smoother. The black finish gives them a professional look that's more attractive than plain steel, and the stainless steel construction means they won't rust or degrade like cheaper alternatives. For the price, getting 150 quality washers is fantastic value compared to buying small quantities at hardware stores. If you want reliable hardware that won't let you down and saves you multiple trips to the store, this Wulankd washer pack delivers professional-grade quality at an affordable price point. They're one of those basic supplies that every serious DIYer or professional should have in their toolkit!