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Frequently Asked Questions

What are Deadbolts Cylinders?

Deadbolts Cylinders are bored-style auxiliary deadbolt locks that secure a door by extending a solid bolt into the frame strike (rather than relying on a spring latch). Many models align to ANSI/BHMA performance requirements for auxiliary hardware (ANSI/BHMA A156.36)

What types of Deadbolts Cylinders are available?

Common types include double-cylinder (key/key) and single-cylinder (key outside / turn inside), plus specialty options like cylinder-to-blank plate/rose and classroom thumbturn functions depending on the series.

What’s the difference between single-cylinder and double-cylinder deadbolts?

A single-cylinder deadbolt uses a key on the exterior and a thumbturn on the interior, while a double-cylinder uses a key on both sides. The right choice depends on the opening’s security needs and any egress/code considerations for that door.

What do ANSI function numbers like E0141 and E0151 mean?

ANSI/BHMA function numbers describe how the deadbolt is operated. For example, E0141/E0142/E0143 are “key from either side” (double-cylinder) functions, and E0151/E0152/E0153 are “key outside / turn inside” (single-cylinder) functions.

How are Deadbolts Cylinders graded (Grade 1 vs Grade 2)?

Grades indicate performance levels verified by standardized testing (cycle, strength, security, and finish). For example, BHMA notes Grade 1 dead locks undergo demanding durability and security testing (including 250,000 cycle testing and high-force security tests), making Grade 1 a common choice for heavier-duty openings.

What backset and door thickness should I match?

Check your door prep first, many Deadbolts Cylinders are available in 2-3/8" or 2-3/4" backset configurations (often adjustable), and typical door thickness coverage is commonly around 1-3/8" to 1-7/8" depending on the model/series.

Can I order Deadbolts Cylinders with interchangeable cores or master keying?

Yes, many commercial lines support keying services and core options, including versions prepped for SFIC/LFIC (interchangeable cores) to simplify rekeying and large key systems. Some series also offer higher-security cylinder families depending on the platform.

Are Deadbolts Cylinders fire-rated or UL listed?

Some models are UL-listed for fire-door applications, and BHMA notes fire door hardware is commonly evaluated/listed to UL 10C by accredited testing labs. Always confirm the specific listing on the product and match it to the door’s fire label requirements.

Which manufacturers are available in this category?

This category includes options from brands such as Accentra (Yale), Arrow, BEST, Corbin Russwin, Dexter, Falcon, Sargent, and Schlage.

Why buy Deadbolts Cylinders from National Lock Supply?

You get a broad mix of Grade 1 and Grade 2 Deadbolts Cylinders across multiple brands and price points, plus a range of functions (single, double, classroom-style, IC-core preps) and finishes to meet both performance and aesthetic requirements.