This Standard establishes performance requirements for Mortise
Locks and Latches and includes operational, cycle, strength,
material evaluation, security, and finish tests, and dimensional
Tests described in this Standard are performed under laboratory
conditions. In actual usage, results may vary because of
installation, maintenance, and environmental conditions.
Grade Qualifications (Also see Appendix A)
Two classifications of Grades are described in this Standard.
Manufacturers shall indicate separately, for both an Operational
Grade and a Security Grade level of mortise locks and latches. The
minimum acceptable grade level for Operational and Security grades
shall be a grade 3.
Operational Grades shall meet the requirements of Sections 8, 9,
10, 11 and 13. 220.127.116.11 Security Grades shall meet the requirements
of Section 12.
Any function shall be tested for qualification under Operational
Grades and all other functions shall be considered as meeting the
criteria provided the lock case and operating parts are of the same
construction as that of the lock previously tested. 1.4.3
Function F21 or a similar function with dead bolts and function
F04 or a similar function without dead bolts to be certified shall
be tested with the trim for qualification under Security Grades.
All other functions where access is prevented shall be considered
as meeting the criteria provided the lock case and operating parts
are of the same construction as that of the lock previously
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