They have a round cap with a hex head and are tightened with a socket wrench drive.
1 2 13 socket head bolt dimensions.
Longer caps are easier to see when fastened while button and flat head caps are less likely to snag clothing or linkages.
Usa socket head cap screws.
Similar thread design as a socket cap screw but the dome shaped head is wider and has a lower profile.
Similar to a button head socket screw but with an 82 degree countersunk flat head.
Normal fit clearance dia.
This chart contains information on number metric and fractional number socket head cap screws along with tap drill information.
Diameter screw head body diameter d diam in a height in h min.
Head height is 50 of a standard socket head and the socket size is smaller.
The close fit is normally limited to holes for those lengths of screws that are threaded to the head in assemblies where only one screw is to be used or where two or more screws are to be used and the mating holes are to be produced either at assembly or by matched and coordinated tooling.
The thread length on socket head cap screws shall be as defined by table 1b and notes thereto.
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.
Griping gaging length lg.
Socket head cap screws 5 1 button head and flat head socket cap screws 5 2 socket set screws 5 3 hexagon keys and bits 5 4 socket head shoulder screws dowel pins and slotted set screws 5 5 square head set screws and socket pipe plugs 5 6 physical properties of sockets 5 6 point terminology 5 7 flange 12 point screws 5 8 to 5 9.
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.
Socket head cap screws are commonly used in machine assembly for removable panels and parts.