ANSI/BHMA A156.5 Grade 3: Residential Baseline Testing Criteria (400,000 Cycles)
Engineering Overview: Technical specifications for ANSI/BHMA A156.5 Grade 3 residential lock cylinders, detailing cycle life and impact benchmarks.
Technical & Engineering Specifications
| Grade Tier | Grade 3 (Residential Standard) |
|---|---|
| Application | Single-Family Interior & Exterior Doors |
| Cycle Durability | 400,000 Operational Cycles |
| Pulling Resistance | 450 lbf (2,000 N) |
| Standard Reference | ANSI / BHMA A156.5-2020 |
Residential Baseline Performance
ANSI/BHMA A156.5 Grade 3 establishes minimum baseline performance for single-family residential locksets.
Testing Thresholds
- Cycle Durability: 400,000 cycles.
- Pulling Resistance: 450 lbf (2,000 N).
- Impact Load: 2 blows of 30 ft-lbs (40 J) impact.
Frequently Asked Engineering & Selection Questions
Q1: What is the minimum cycle requirement for ANSI Grade 3 locks?
ANSI Grade 3 requires 400,000 continuous cycles, suitable for standard residential door hardware.