What is the best commercial mortise lock?

The Schlage L9000 is the most widely specified. The Sargent 8200 has the highest cycle count at 14M+. The Corbin Russwin ML2000 is heavily specified on government projects. All are ANSI/BHMA Grade 1.

What is the difference between Grade 1 and Grade 2 locks?

Grade 1 locks are tested to 1,000,000+ cycles with higher impact resistance. Grade 2 are rated for 250,000 cycles. Grade 1 is standard for commercial exterior doors and high-traffic areas.

What is the best door lock for school classrooms?

The Schlage ND78 classroom security lock allows locking from inside without opening the door, meets ADA requirements, and maintains fire egress compliance.

What is the difference between Schlage ND and ALX?

ND is Grade 1 with 1M+ cycles and electrified options. ALX is Grade 2 with 250K cycles and modular chassis at lower cost. They share the same lever designs.

What is the most common commercial door closer?

The LCN 4040XP is the most widely specified surface-mounted commercial door closer in the US, covering sizes 1-6 and all three mounting types.

What locks are used in hospitals?

Grade 1 mortise locks on high-traffic doors, cylindrical locks on patient rooms, electronic access with audit trails on pharmacy and restricted areas.

How much cheaper is wholesale vs retail door hardware?

Wholesale pricing on commercial door hardware is typically 20-40% below manufacturer list price. Project quotes for large orders can be even lower.

Klein Tools 31948 Professional Hand Tool for Commercial

Descriptions

Bi-Metal Hole Saw, 3"

Klein Tools 31948 is built for professionals who demand dependable performance in commercial work environments. Backed by Klein Tools’ long-standing commitment to American manufacturing, this professional hand tool reflects a legacy of quality, durability, and practical design established since 1857.

Designed for commercial applications, the Klein Tools 31948 supports the daily demands of professional tradesmen and maintenance specialists. Its dependable construction is intended to provide consistent service on the job, helping users work efficiently across a range of demanding tasks. The tool is made with the workmanship and attention to detail expected from a trusted name in professional hand tools.

From job sites and service calls to facility maintenance and installation work, the Klein Tools 31948 delivers reliable utility for commercial users. Choose Klein Tools for professional-grade tools developed with the needs of working tradesmen in mind and supported by more than 160 years of manufacturing experience.

Features:

Brand: Klein Tools
Part Number: 31948
Application: Commercial use
Construction: Professional-grade hand tool designed for dependable service
Heritage: Manufactured by Klein Tools, a trusted American hand tool brand since 1857