Guide to ANSI Codes
ANSI/BHMA Standard A156.5: Auxiliary Locks and Associated Products
Auxiliary Bored Locks
| Product | Grade | Remarks |
|---|---|---|
| 480 Series | 1 | Meets and greatly exceeds standard |
| 470 Series |
Testing Criteria
Listed below are only some of the tests and criteria covered in this standard. For simplification, all tests and details of tests are not elaborated on. For exact and complete details of tests, etc. refer to the complete ANSI/BHMA standard.
1. Cycle test
One cycle consists of the deadbolt being projected and retracted by a thumb turn or key.
| Grade | Cycles |
|---|---|
| Grade 1 | 250,000 cycles |
| Grade 2 | 150,000 cycles |
| Grade 3 | 100,000 cycles |
2. Deadbolt projection
Bored locks, all grades: 1 inch.
3. Deadbolt and strike test
Force applied 1 inch from lock edge of door on centerline of deadbolt.
| Grade | Cycles |
|---|---|
| Grade 1 | 1,350 pounds |
| Grade 2 | 1,120 pounds |
| Grade 3 | 675 pounds |
4. Cylinder guard impact test
| Grade | Force | Blows |
|---|---|---|
| Grade 1 | 75 foot pounds | 10 blows |
| Grade 2 | 75 foot pounds | 5 blows |
| Grade 3 | 75 foot pounds | 2 blows |
5. Cylinder guard tension test
| Grade | Force | Blows |
|---|---|---|
| Grade 1 | 75 foot pounds | 10 blows |
| Grade 2 | 75 foot pounds | 5 blows |
| Grade 3 | 75 foot pounds | 2 blows |
Note: Key Cylinders
All keyed cylinders used in these locks shall be of the pin tumbler type and shall have five or more pin tumbler cavities. The keyways shall have longitudinal ribs. Modification of these requirements to provide greater security are permitted.
Refer to ANSI/BHMA Standard A156.5 for other key cylinder requirements.