BHMA A156-39:2015 pdf download.AMERICAN NATIONAL STANDARD FOR RESIDENTIAL IOCKSETS AND IATCHES
3.GENERAL
3.1 Cylinders Cylinders are normally supplied and mated with Residential locksets and shall be tested as a complete product. However, some cylinders supplied or mated with locks are allowed to be used and shall meet the performance requirements for the appropriate cylinder types with minimum of Grade 3 grade level found in the ANSI/BHMA Standard A156.5-2011 for Cylinders and Input Devices. For the lock to retain its grade listing or tested as a complete assembly within the Durability Cylinder testing section. Assemblies take the grade level of the lowest graded component. For all intents and purposes Residential Grade A shall be equivalent Grade 2, Residential Grade B shall be equivalent Grade 3, Other mechanisms are permitted to be used in lieu of cylinders providing the performance and security criteria are equivalent to that of cylinders. Suffix D cylinders shall be indicated in the certified products directory for locks to be used only with drill resistance cylinders as evaluated in A156.5.
3.2 No lock can provide complete security by itself. Locks may be defeated by forcible or technical means, or evaded by entry elsewhere on the property. No lock can substitute for caution, awareness of your environment, and common sense. Builder s hardware is available in multiple performance grades to suit the application. In order to enhance security and reduce risk, consult a qualified locksmith or other security professional. For applications where pick resistance and other higher security protections are required users should consider locks meeting UL 437 or ANSI/BHMA A156.30 for High Security Cylinders.
3.4 Reference to Other Standards. The following Standards are referenced within: ASTM F476 R 1996, Security Tests for Swinging Door Assemblies; ANSI/BHMA Standard A156.5-2013 for Cylinders and Input Devices， ANSI/BHMA Standard A 156.12-2012 for Interconnected Locks,ANSI/BHMA Standard A156.13 2012 for Mortise Locks, ANSI/BHMA Standard A156.18 2012 for Materials and Finishes, ANSI/BHMA A156.25-2013 for Electrified Locking Devices, ANSI/BHMA A156.36-2010 for Auxiliary Locks. ANSI Standards are available from BHMA,www.buildershardware.com. ASTM Standards are available from www.astm.org.
3.6 Door and Frame Preparation The lock models described in this standard shall fit the door and frame preparations described in the ANSI/BHMA A156.115 Series. Other configurations are permitted to fit special opening templating requirements. See manufacturers' instructions for details.
3.7 Building Codes Certain lock functions described in this standard are not permitted on doors within a means of egress. Consult local authority having jurisdiction. When locks and latches are used in fire door assemblies, they shall have been tested and listed for use in fire doors by a Nationally Recognized Testing Laboratory (NRTL) and shall be under an in-plant follow-up inspection service.BHMA A156-39 pdf download.