Mul-T-Lock® Grade 1

Mul-T-Lock Grade One Hercular® — The Ultimate Deadbolt for Los Angeles Security

At Guardian Angel Locksmith, we understand that the peace of mind of our Los Angeles clients begins at the front door. While stylish handles add curb appeal, the true heart of your home’s defense is the deadbolt. For those who demand the highest level of protection against physical attacks, we often recommend a solution engineered for uncompromising strength and resilience: the Mul-T-Lock Hercular deadbolt.

With its truly unique design, the Mul-T-Lock Hercular is spectacular in its robust construction. This is not just another lock; it is a comprehensive security system designed to be the strongest point on your door. The Hercular is reinforced in just about every way possible. From a UL437 Listed high-security cylinder to a fortified latch and an innovative Bolt Bearing Mechanism, the Hercular Deadbolt will stop almost any attempt at forced entry.

In the world of high security, strength usually comes at the cost of flexibility. Not in the case of the Hercular. It stands alone as the only ANSI Grade 1 Deadlock with an adjustable backset, making it a versatile powerhouse for nearly any door. Let’s break down what makes this lock the gold standard in residential and commercial security.

Mul-T-Lock

Grade One Core Hercular Features

What sets the Hercular deadbolt apart is its multi-layered approach to security. Each feature is designed to defeat a specific method of attack used by intruders.

ANSI Grade 1 Locking Mechanism

The American National Standards Institute (ANSI) provides independent, rigorous testing standards for door hardware. A Grade 1 rating is the highest possible certification, reserved only for locks that can withstand a punishing series of tests, including:

Heavy Hammer Strikes: Simulating a brute-force sledgehammer attack.
Extreme Bolt Pressure: Testing the bolt’s resistance to being pried or spread apart from the door frame.
Intense Cycle Testing: The lock must endure hundreds of thousands of cycles without failure, ensuring long-term durability. The Hercular’s Grade 1 rating means it is certified for heavy-duty commercial use, offering homeowners an unparalleled level of residential protection.

The UL437 High-Security Cylinder

The lock cylinder is the component you interact with using your key, and it is the primary target for sophisticated attacks. The Hercular features a UL437 Listed cylinder, a security standard from Underwriters Laboratories that certifies it as highly resistant to nearly all forms of covert and forced entry:

Drill Resistance: The cylinder is constructed with layers of hardened steel pins and plates designed to shatter drill bits on contact.
Pick Resistance: Mul-T-Lock’s unique telescoping pin-in-pin tumbler system is exceptionally complex, making it virtually impossible for even a skilled locksmith to pick.
Bump Resistance: “Bumping” is a lock-picking technique that uses a specially cut key to align a lock’s pins and open it in seconds. The Hercular’s intricate internal design is inherently resistant to this widespread threat.

The Bolt Bearing Mechanism

A subtle but brilliant feature of the Hercular deadbolt is the small, hardened steel ball bearing that is set into the face of the bolt itself. If an intruder attempts to use a reciprocating saw to cut through the bolt, the bearing will spin freely against the saw blade, preventing it from getting a grip and dramatically increasing the time and noise required to defeat the lock.

The Patented Interactive® Key Control System

A lock is only as secure as its key. Mul-T-Lock implements strict key control procedures to protect against the number one security risk: unauthorized key duplication. We will explore this in-depth later, but this system ensures that only you, with your unique Key Order Card, can have new keys made.

Choosing Your Hercular: Single, Double, or Captive

The Hercular is not a one-size-fits-all solution. Mul-T-Lock offers it in three distinct configurations to meet the specific security and safety needs of your application.

1. Mul-T-Lock® Grade 1 SINGLE-SIDED DEADBOLT

This is the most common configuration and the high-security standard for most solid residential and commercial doors. It features a keyway on the exterior and a simple thumb-turn on the interior, allowing for quick, keyless exiting.

FEATURES:

ANSI Grade 1 Locking Mechanism
UL Fire Rated Latch
UL437 High security drill, pick and bump resistant cylinder
MUL-T-LOCK’s Key Control System

SPECIFICATIONS:

Backset: Adjustable ( $2 - 3/8″$ to $2 - 3/4″$ )
Key Way: 616B
Keys Included: 2 (or 1 if keyed alike)

2. Mul-T-Lock® Grade 1 DOUBLE-SIDED DEADBOLT

A double-sided deadbolt requires a key for operation from both the inside and the outside. This model is specifically designed for doors with glass panels, sidelights, or any opening within arm’s reach of the lock. If an intruder breaks the glass, they cannot simply reach in and turn a thumb-turn to unlock the door.

CRITICAL SAFETY CONSIDERATION: While offering superior security against this type of entry, a double-sided deadbolt can pose a safety risk during an emergency like a fire, as it can impede a rapid exit. It is crucial to always keep a key stored near the door for emergency use. We advise all clients to check local fire codes before installing a double-sided deadbolt.

FEATURES:

ANSI Grade 1 Locking Mechanism
UL Fire Rated Latch
UL437 Drill and Pick Resistance Cylinder
Bump Resistant High Security Lock Cylinder
MUL-T-LOCK’s Patented Interactive® Key Control System

SPECIFICATIONS:

Backset: Adjustable ( $2 - 3/8″$ to $2 - 3/4″$ )
Key Way: 206
Keys Included: 2 (or 1 if keyed alike)

3. Mul-T-Lock® Grade 1 CAPTIVE DEADBOLT: The Best of Both Worlds

For those who want the security of a double-sided deadbolt without compromising safety, Mul-T-Lock created the ingenious Captive Key Hercular. This functions as a hybrid of a single-cylinder and double-cylinder deadbolt.

The interior side of the lock incorporates two cylinders. Here’s how it works:

Single-Cylinder Mode (For Safety): When you are home, you insert a special key that has a large thumb-turn attached to it into the central cylinder. An internal mechanism locks this thumb-turn key into place, preventing it from being removed. In this mode, the Hercular functions just like a standard single-cylinder deadbolt, allowing for fast, keyless exits in an emergency.
Double-Cylinder Mode (For Security): When you are leaving the house or want maximum security overnight, you simply insert your normal key into the second cylinder on the inside, give it a turn, and the thumb-turn key is released for removal. The Hercular is now a full double-sided deadbolt. Even if an intruder breaks the glass, there is no thumb-turn to operate.

This revolutionary design solves the classic security vs. safety dilemma, offering a flexible and intelligent solution for any door with nearby glass.

The Cornerstone of Security: The Mul-T-Lock Key Order Card

Mul-T-Lock implements strict key control procedures to protect against unauthorized key duplication. Every Mul-T-Lock cylinder we sell comes with a Key Order Card. This durable, credit-card-like card contains a unique magnetic strip with the specific data for your keys.

This is your proof of ownership and authorization. Anyone attempting to make keys at a licensed Mul-T-Lock dealer without physical possession of this card will be refused. This ensures that a contractor, valet, or former employee cannot secretly make a copy of your key. You can rest assured that Mul-T-Lock’s high-security protection covers all the bases—offering strength, durability, superior pick and drill resistance, and ultimate key control with every cylinder.

Style Meets Strength: Available Finishes

Superior security does not require a sacrifice in aesthetics. The Hercular deadbolt is designed to complement your existing hardware and is available in a variety of premium finishes:

Bright Brass
Satin Chrome
Bright Chrome
Satin Nickel
Antique Brass
Oil Rubbed Bronze
Flat Black

The Guardian Angel Locksmith Guarantee: Expert Installation

A high-performance lock like the Mul-T-Lock Hercular is an investment in your security. Its effectiveness is directly tied to the quality of its installation. Our professional technicians ensure every component is perfectly fitted and aligned, from reinforcing the door frame to setting the strike plate, guaranteeing your lock performs to its maximum certified potential.

To discuss how the Mul-T-Lock Hercular can fortify your Los Angeles home or business, contact Guardian Angel Locksmith today for a professional security consultation.

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