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BHMA A156.28-2007
- Recommended Practices for Keying Systems
- standard by Builders Hardware Manufacturers Association, 09/12/2007
- Publisher: BHMA
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The scope of this recommended practice is limited to mechanical key bitting, cylinder pinning and multiplexkey systems.
The purpose of this document is to recommend the approach to selecting the optimal keying system, once thetype of cylinder has been selected by other criteria.
This recommended practice is not intended to provide sufficient information for a full understanding of masterkey systems.
Various types of cylinders have varying levels of security and performance to which other standards mayapply. These include ANSI and Underwriters Laboratories standards.
The purpose of this document is to recommend the approach to selecting the optimal keying system, once thetype of cylinder has been selected by other criteria.
This recommended practice is not intended to provide sufficient information for a full understanding of masterkey systems.
Various types of cylinders have varying levels of security and performance to which other standards mayapply. These include ANSI and Underwriters Laboratories standards.
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