| 标准编号 Standard/Code | 标准名称 Standard Title |
| ANSI/BHMA A156.2 | Bored And Preassembled Locks And Latches |
This Standard establishes performance requirements for bored and preassembled locks and latches, and includes dimensional criteria, operational tests, strength tests, cycle tests, security tests and material evaluation tests. Tests to evaluate decorative and protective finishes for these products are described in ANSI/BHMA A156.18 for Materials and Finishes, and are required to complete certification. Tests described in this Standard are performed under laboratory conditions. In actual usage, results vary because of installation, door and frame construction, maintenance and environmental conditions.
Test Requirement 测试要求：
OPERATIONAL TEST (Sample A/B/C) - 10 Working days
9.1 Force to retract unloaded bolt
9.2 Force to retract preloaded bolt
9.3 Minimum projection of bolt when depressed to dead latched position
9.4 Minimum projection of auxiliary dead latch to deadlock latch bolt
9.5 Force to latch door
STRENGTH TEST (Sample D/E/F) - 15 Working days
10.1 Locked torque test
10.2 Axial load test
10.3 Vertical load test
10.4 Latch bolt strength
10.5 Latch bolt end pressure
10.6 Unlocked outside lever or knob torque test
10.7 Unlocked entry handleset load test
10.8 Qualification requirements
CYCLE TEST (Sample A/B/C)
Grade 1: 800000 cyles - 100 working days
Grade 2: 400000 cycles - 50 working days
Grade 3: 200000 cycles - 30 working days
(1) 15 件自由抽取的样品和它们的原配钥匙（其中两个锁芯每个要带它们最接近牙花的钥匙两把）
(2) 包装，标签和使用说明等信息。
(3) 制造商提供的牙花编排信息，包括牙花数，弹子孔数，弹子级差数
Sample Size 样品数量 / 送样规格: 6pcs
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 Regular service 100 working days
Report Summary 报告摘要:
