McGard - Secure your manhole cover to its frame with McGard ManLock high security lock bolts to keep out intruders. Simple yet effective manhole security by way of a patterned bolt head helps to prevent unwanted access to any manhole cover, drainage grate, steel access panel or hinged vault door.

Replace your existing manhole cover bolts or modify your ring and cover to accept our bolt. Terrorists don't have a chance once you install these ultra high security locks. The Intimidator ManLocks are used to satisfy the security requirements of the Federal Aviation Administration (FAA), the Federal Bureau of Prisons (FBOP) and many other military and government agency physical security requirements.

• Triple-nickel chrome plated lock to resist corrosion
• Alloy steel heat treated to 150,000psi tensile strength
• High security
• Controlled access using McGard's unique keys
• Easily retro-fitted to existing covers
• Standard 3/8", 1/2" and 5/8" sizes fit all foundry product lines
• Non-corrosive protective caps
• Consult McGard for application information