8 Sets Universal Headboard or Footboard Hardware Nuts and Bolts 4 inches and 2 1/2" Long,for Furniture, Cots, Beds, Crib and Chairs Round Head Square Neck Bolt,Carriage Bolt

A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood in this case a headboard / footboard It is distinguished from other bolts by its shallow mushroom head and the fact that the cross-section of the shank, though circular for most of its length (as in other kinds of bolt), is square immediately beneath the head.This makes the bolt self-locking when it is placed through a square hole in a metal strap. This allows the fastener to be installed with only one tool, a spanner or wrench, working from one side. The head of a carriage bolt usually is a shallow dome. The shank has no threads; and its diameter equals the side of the square cross-section. The carriage bolt was devised for use through an iron strengthening plate on either side of a wooden beam, the squared part of the bolt fitting into a square hole in the ironwork. It is common to use a carriage bolt to bare timber, the square section giving enough grip to prevent rotation. The carriage bolt is used extensively in security fixings, such as locks and hinges, where the bolt must be removable from one side only. The smooth, domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.

• High quality barrel bolt nuts kit is ideal for repairs and replacement. This set of barrel bolts nuts can fit for many different things, such as beds, chairs, cots, crib, sofa and different kinds of furniture, meet your various needs and they can also work well in joining wood, boards, kitchen worktops, etc
• Our package is designed to fit most headboards or footboards. Whether your headboard is thick or thin we intentionally include two different length bolts inside the package.Included is Four 2½" bolts for thinner headboards and four 4" bolts to accommodate thicker headboards. Plus 8 nuts and washers
• Made of high quality 304 stainless steel, which features is strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using
• If you need to connect both headboard AND footboard you will need to purchase a quantity of 2 universal set pack.The total length of the bolt is 4In and is only suitable for headboards with a total thickness of 3-3.8 inches.The other total length of the bolt is 2.5In and is only suitable for headboards with a total thickness of 2-2.3 inches
• The average error is less than 0.01mm. The Nuts and flat washers expand the contact area and reduce the pressure in order to protect the screws and parts. Compact and force uniform screw thread is not easy to out of shape and slid in the process of rolling and installation