Socket Head Bolt Size Chart

This chart contains information on number metric and fractional number socket head cap screws along with tap drill information.

Socket head bolt size chart.

Bolt diameter head and wrench size. The thread length on socket head cap screws shall be as defined by table 1b and notes thereto. About brands products services industries resources contact shop online. Tap and drill sizes.

The grip gaging length is the distance measured parallel to the axis of the screw from the bearing surface of the head to the first complete full form thread under the head see table 1b. Print this page. Nominal screw sizes m5 and larger have six drilled holes spaced 60 degrees apart unless the purchaser specifies two drilled holes. 5 16 1 4 7 16 or 3 8 5 16 1 2.

It is important to remember that usually hexagon socket head cap screws are not available in sizes larger than m36 or smaller than m3. There are a few suppliers that might stock these items but if you are looking for those specific sizes it ll be best to get in contact directly with the supplier. The positioning of holes on opposite sides of the socket should be such that the hole alignment check plug will pass completely through the head without any deflection. If all else fails you may want to use our drill size conversion table or our tap drill size calculator the information available from our sources is usually sufficient for all computer related drill or screw requirements world wide.

Us bolt head wrench size.