ANSI/BHMA A156.5 Grade 2: Standard Commercial Testing Criteria (800,000 Cycles)
Engineering Overview: Technical overview of ANSI/BHMA A156.5 Grade 2 standards for light commercial and multi-family residential lock cylinders.
Technical & Engineering Specifications
| Grade Tier | Grade 2 (Standard Commercial / High Residential) |
|---|---|
| Torsional Load | 150 in-lbs (17 N.m) |
| Cycle Durability | 800,000 Operational Cycles |
| Pulling Resistance | 900 lbf (4,000 N) |
| Standard Reference | ANSI / BHMA A156.5-2020 |
Standard Commercial Performance
ANSI/BHMA A156.5 Grade 2 certifies cylinders for light commercial offices and multi-family residential complexes.
Testing Thresholds
- Cycle Durability: 800,000 full operating cycles.
- Pulling Resistance: 900 lbf (4,000 N) direct axial pull.
- Torsional Resistance: 150 in-lbs (17 N·m) rotational torque.
Frequently Asked Engineering & Selection Questions
Q1: What is the cycle life of an ANSI Grade 2 lock cylinder?
An ANSI/BHMA Grade 2 cylinder must successfully complete 800,000 continuous operating cycles under laboratory testing.