BumpStop® Advanced Cylinder Technology is the default cylinder in all American Lock Government security products to meet CID requirements and provide resistance to Bump attacks. These specifications are based on ASTM F883-09, ASTM International testing criteria for determining a pin tumbler padlock cylinder&rsquo's ability to effectively resist break–ins using lock bumping techniques. BumpStop® cylinders have a reverse rake tapered driver pin, high performance spring and precision tolerance chamber, available in our 4–, 5– and 6–pin products. American Lock padlocks with BumpStop® technology exceed Grade 6 lock bump test criteria.
For more information please view the BumpStop® video or visit the BumpStop® Security website.