Socket Head Bolt Size Chart

Use the mudge fasteners bolt head size chart to determine the head size and wrench or socket size required for any hex bolt or lag screw you use.

Socket head bolt size chart.

Print this page. Nominal screw sizes m5 and larger have six drilled holes spaced 60 degrees apart unless the purchaser specifies two drilled holes. Hex bolt lag bolt square bolt heavy hex bolt 6. 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.

Griping gaging length lg. About brands products services industries resources contact shop online. Us bolt head wrench size. This chart contains information on number metric and fractional number socket head cap screws along with tap drill information.

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. 5 16 1 4 7 16 or 3 8 5 16 1 2. Bolt diameter head and wrench size. Tap and drill sizes.

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.