A wide variety of security nuts, barrel nuts, security caps and enclosures. Permanent & reusable tamper proof nuts available from stock, with special sizes to order.
Security nuts are typically used in applications where the male mating fastener is not in view or accessible, but the application must be secured to resist theft or tamper by securing the thread with a security nut. Tamper-proof nuts are suitable for use with any bolt, screw or stud with a mating machine thread and are largely stocked in a metric thread; imperial threads are also available.
Anti-tamper / tamper proof nuts
Most security nuts are available from stock, with other sizes and materials available to order. Security barrel nuts can be manufactured as part of a security sex bolt set with a matching male part.
Showing all 19 results
2-Hole Pig Nose Security Nut
2-Hole Pan Head Security Barrel Nuts & Sex Bolts
2-Hole C/sunk Security Barrel Nuts & Sex Bolts
2-Hole Security Nut
Angled 2-Hole Security Nut
4-Hole Security Nuts
Security Armour Rings
Clutch Head Security Barrel Nuts & Sex Bolts
Pin Hex Security Barrel Nuts & Sex Bolts
Pin Hex Countersunk Security Barrel Nuts
Kinmar® Security Removable Nut
Kinmar® Security Permanent One Way Nut
No-Go Security Enclosures
Shear Nuts (Security Breakaway Nuts)
Security Tri Head Nuts (Triangular Head Nuts)
6 Lobe Pin TX Button Head Security Barrel Nuts & Sex Bolts
6 Lobe Pin TX Countersunk Security Barrel Nuts & Sex Bolts
Security Wave Nuts
Wave Security Barrel Nuts and Sex Bolts