McMaster-Carr is the complete source for your plant with over 700,000 products. 98% of products ordered ship from stock and deliver same or next day.

Choose from our selection of materials, including steel, aluminum, and more. In stock and ready to ship.

Have a question, comment, or need assistance? Send us a message or call (630) 833-0300. Will call available at our Chicago location Mon-Fri 7:00am–6:00pm and Sat 7:00am–2:00pm.

Choose from our selection of metals, including aluminum, steel, and more. In stock and ready to ship.

Choose from our selection of fasteners, including socket head screws, rounded head screws, and more. In stock and ready to ship.

Choose from our selection of socket head screws, rounded head screws, hex head screws, and more. In stock and ready to ship.

Choose from our selection of raw materials, including aluminum, steel, and more. In stock and ready to ship.

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

Choose from our selection of hex bolts, including over 35,300 products in a wide range of styles and sizes. In stock and ready to ship.

With a tensile strength of 180, 000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and more than two and a half times stronger than stainless steel screws with split lock washer. The split lock washer helps to resist vibration.