JMIKS Fasteners supplies anti-theft bolts (security bolts) in SS 304, SS 316 and SS 202, from M6 to M20. The smooth, cone-shaped head has no hexagon, slot or socket, so the bolt cannot be held or turned with ordinary tools.
Head : Smooth cone-shaped head, no drive
Size : Metric- M6 To M20
Material Grade : Stainless Steel (SS304 / SS316 / SS202)
Length : As required
The head of an anti-theft bolt is a smooth cone with no flats, slot or socket, so a spanner or screwdriver cannot grip it. The bolt is fitted from one side and tightened with a security nut on the other side, usually a security shear nut whose top breaks off at the set torque. With both ends smooth, the joint cannot be undone with common tools.
A security shear nut is the usual choice. Its top breaks off when it is tight, leaving a smooth cone that cannot be gripped.
Not with ordinary tools. For maintenance it is usually cut or drilled out and replaced with a new bolt and nut.
Send the size, length, grade and quantity, and say whether matching shear nuts and washers are needed, through our enquiry form.