The following illustrations provide you with all the important information on the various screw fittings.
Screws:
Cylinder head screw
Attachment points [Connection points]:
IP 2: Top side of screw head
IP 1: Contact surface screw head
IP 3: Screw end
Countersunk screw
IP 1: Top side of screw head
IP 2: underside of screw head
Stud bolt
IP 1: Top side
IP 2: Bottom side
IP 3: End of screw-in thread
Grub screw
Nuts
Mother
Attachment point [Connection point]:
IP 1: Support surface
Cap nut
Discs / Rings
Disk
Ring
Drill holes
Through-hole threaded hole
IP 1: Top side of material
IP 3: underside of material
Blind hole threaded bore
IP 2: underside of material
IP 3: Thread end
Through-hole with countersink, smooth surface
IP 2: Lowering contact surface
Through-hole for countersunk screws
IP 2: End of subsidence
Through hole
