The size of the head varies with the size of the machine bolt . Since it is externally wrenched, sufficient space around the head must be allowed for wrench clearance. Tables 1 and 2 list head width across flats, which is wrench size , and across corners, head height and minimum threaded length. Machine bolts are available in Grade 2. US Machine Screw Diameter and Thread Chart Our printable 'lay-over' sizing chart for identifying US machine screw diameter and thread count. Metric Machine Screw Diameter and Thread Chart Our printable 'lay-over' sizing chart for identifying metric machine screw diameter and thread pitch. Drive Sizes For. Phillips; Star drive We can manufacture crossarm bolts up to 1-1/2″ in diameter. Crossarm bolts follow the thread length guidelines used for pole line fasteners. More information about machine bolts is available on our educational here. Machine Bolt Dimensions

14 rows Your shopping cart is empty. Subtotal: $0.00 Quick Add Cart / Checkout: Quick Add Hex Bolts , Hex Machine Bolts , Square Head Machine Bolts at InStock Fasteners - The low-price easy-to-use source for industrial and construction fasteners. 23 rows Machine Screw Size Chart and Conversion Tables A #8 screw size is .164 fraction of an …

Machine Screws . 78. L. L. Axis of screw thread . Basic major diameter Minor diameter Basic pitch diameter. Thread Dimensions . a. Tensile strength values are based on 60,000 psi. and apply to carbon steel screws and SEMS only. Machine screws are usually found in smaller sizes . They are inserted into pre-drilled heremonly used to hold two pieces of metal together. A machine screw nut with the appropriate thread size is threaded onto the shaft of the machine screw for tightening purposes. Machine screws are threaded along the entire shaft of the screw . These machine screws are used with nuts or These machine screws are used with nuts or directly into a female threaded receptacle to fasten metal parts together. They are installed into an existing or predrilled pre-taped hole and are fully threaded.