New ASTM Standard Enables Apples-vs-Apples Comparison of Lock Bump-Prevention Capabilities.

Testing criteria under ASTM International revised Standard F883-09, section 9.6, can be used to determine a pin tumbler cylinder’s ability to effectively resist break-ins using lock bumping techniques.

The Standard requires that each of five locks from a manufacturer be tested by each of three locksmiths using both a “Pull” and a “Push” bump key. Furthermore, Standard F883-09 establishes six security Grade Levels. Each Grade Level calls for 20 bump attempts by each locksmith, 10 with each type of key, for a total of 60 bump attempts in order to attain one level of security. If all 60 attempts fail to bump-open all five locks, the product is deemed to have passed that grade level. If only one lock fails or opens from just one bump attempt, all locks are deemed to have failed to reach that level.