Mechanical hook bolt lock case STEP H51

– with the absolute highest intrusion security

STEP H51 is a mechanical hook bolt lock case with a modern bolt placement. It is certified for the highest burglary protection and is developed for door environments with the absolute highest requirements for intrusion security. H51 is perfect as a night lock.

The hook bolt is extremely strong with a breaking strength of 56 kN (5,600 kg). This makes the lock very difficult to force and will ensure high security in your door environment.

Certified for burglary protection in Class 5 according to SSF 3522.
Certified for burglary protection in Class 7 according to EN 12209.
Certified for fire resistance in Grade 1 (E/EI120) according to EN 12209 in combination with a latch lock.

Relevant for many types of door environments

STEP H51 fit all types of security doors and perimeter protection doors. This includes a variety of businesses, such as shops, restaurants or apartment doors.

Create an electrical lock/unlockning solution

If you combine STEP H51 with electric strike STEP 18 Secure, you can create a smooth passage with electric locking/unlocking. A perfect combination for, e.g. prisons, institutions, industries or office premises.

Available with or without microswitch

Lock with microswitch has art.no. H51M.
Lock without microswitch has art.no. H51.

Fine material choises

The hook bolt is made of hardened steel with a surface treatment of chemical nickel plating to achieve the highest quality and function. The lock case face plate is made of stainless steel.

Developed for e.g. the following door environments:

⇒ Night lock position in high security doors and perimeter locking.

⇒ Perfect for shop entrances, restaurants, apartment doors, storage areas etc where a mechanical lock is appropriate.

⇒ Combine with electric strike STEP 18 Secure to create a smooth passage with electric locking/unlocking in prisons, prisons, industries and office premises, etc.

Swedish premium quality

All our products are developed and manufactured by us, in Sweden. Maximum functionality and reliability are fundamental product features we never compromise on. By choosing STEP, you are selecting premium-quality products designed to deliver exceptional reliability for the long term.

Designed for demanding environments

Some environments place particularly high demands on durability and performance. These include door systems exposed to extreme weather changes, heavy wear and tear, or challenging conditions such as salt, moisture, or high preload pressure. Thanks to their functionality and reliability, our products are built to withstand even the toughest environments. Choose STEP – When it has to work.

Fire approved: E/EI 120*
(* in combination with other lock.)

Security: Class 5 SSF-3522

Security: Grade 7 EN 12209

Functional description

The hook bolt locks/unlocks via cylinder position with 360° rotation from both the interior and exterior side.

Certificates

Certified for burglary protection in Class 5 according to SSF 3522.
Certified for burglary protection in Class 7 according to EN 12209.
Certified for fire resistance in Grade 1 (E/EI120) according to EN 12209 in combination with a latch lock.
Certified for durability in Grade C according to EN 12209.
Certified for corrosion and humidity in Grade G (which corresponds to very high requirements) according to EN 12209.

Product characteristics

Modern bolt placement.
Backset 50 mm.
Reversible to fit both right and left hung doors.
56 kN (5 600 kg) breaking strength.
For round and oval Scandinavian cylinders.
Lock case face plate in stainless steel.
Hook bolt in hardened steel with a surface treatment of chemical nickel plating.
Available with or without microswitch.
Microswitch unipolar changeover, max. 30 V DC, 1A.
Combine with electric strike STEP 18 Secure (12 mm) to create a electric locking/unlocking solution.
If using thumb turn, a magneticthumb turn must be used.
Unsurpassed quality.
Developed and produced in Västerås, Sweden.
Patent pending.

Environment

The lock can withstand temperatures from -20 to +70 degrees.

Article number	E-nr	Description
H51	5868473	STEP H51 Mechanical hook bolt lock case. With hook bolt.
H51M	5868474	STEP H51 Mechanical hook bolt lock case. With hook bolt and microswitch.
H51M-C	5868832	STEP H51 Mechanical hook bolt lock case. With hook bolt, latch bolt and microswitch. Incl. 10 m connection cable ST0119.