HSL C175
Mechanical cell lock with slam action operation
Surface or flush mounted deadbolt lock for detention room doors with slam action operation and mechanical locking status display on the key guide side.

Functional description
Unlocking is achieved by turning the HSL key 180°. Main bolt is then retracted by depressing the lever handle. The bolt is then automatically held open whilst the door is in the open position.
Locking is automatically archived when the door is returned to the closed position and the auxiliary latch is depressed on contact with the strike plate mounted on the frame releasing the main bolt.
The lock has an external visual indicator mechanism which allows staff to check the status of the lock. When the indicator is horizontal the lock is secure, any other condition is insecure.
Re-coding the lock
Internal 9-fold re-coding without the need to replace the locking mechanism
Features
Surface or flush mounted deadbolt lock for detention room doors with slam action operation and mechanical locking status display on the key guide side.
Application areas
The HSL-C 175 mechanical cell lock can be flush or surface mounted and is a robust design with locking technology based on the STUV HSL series standard. The main deadbolt offers a 32 mm bolt throw and is automatically thrown when the door is in the fully closed position providing reliable door security.
The lock is designed as a replacement lock (retrofitting) for existing locks used in custody doors.
Overview
- 1:1 Replacement of old surface or flush mounted locks
- Easy operation with HSL double-bit key (1-turn)
- Locking can be re-coded 9-fold without changeover key
- Anti-pick 7-lever internal locking device with unique HSL lever system
- Snib bolt release mechanism for reliable slam action operation
- 5 anti-tamper fixings to prevent unauthorised removal
- available in left or right hand variant
Product locations
- Detention room door
Technical details
Dimensions: (LxWxH) | 267 x 30 x 285 mm |
Forend dimension: (LxWxH) | 285 x 30 x 4 mm |
Bolt dimensions: (LxWxH) | 32 x 22 x 45 mm |
Bolt throw: | 32 mm |
Bolt material: | Stainless steel |
Snib bolt material: | Stainless steel |
Lock case material: | Stainless steel |
Finishing: | matt |
Weight: | 7,0 kg |
Locking system: | HSL double-bit |
Levers: | 7 |
mechanically re-codable: | yes |
mechanical bolt position indicator: | yes, one-sided |
max. side load forces: | 30 kN |
max. end load bolt counterforce: | 6 kN |
Number of audited locking operations: | 500,000 |
IP rating: | IP65 |
Operating temperature: | -40°C to +65°C |
Storage temperature: | -40°C to +65°C |
Relative humidity: | 95% non condensing |
Technical drawing

Options
The following equipment options are available for lock type HSL-C 175:
- S1 | Main Locking Mechanism: Lockable on one side
- DR | DIN direction: right hand
- DL | DIN direction: left hand
- AS | Removal barrier
- PS | Production lock (dummy lock without tumbler lock mechanism)
S1 | Main Locking Mechanism: Lockable on one side
The key guide of the main locking mechanism is located on one side of the lock. This equipment is used e.g. for detention room locks.
Configurable options
- Lockable on one side
- Lockable on both sides
DR | DIN direction: right hand
If the hinges are on the right side of the door, it is the "DIN right" door opening.
Configurable options
- DIN direction: right
- DIN direction: left
DL | DIN direction: left hand
If the hinges are on the left side of the door, it is the "DIN left" door opening.
Configurable options
- DIN direction: right
- DIN direction: left
AS | Removal barrier
The removal barrier prevents unauthorised removal of the lock when the door is open. The lock can only be removed when the locking elements are locked. Ergo, the double-bit key is absolutely necessary.
PS | Production lock (dummy lock without tumbler lock mechanism)
Dummy lock available for door production without security features. The production lock will be charged. After a faultless return (inspection by STUV Prison Solutions), the amount minus shipping costs will be refunded or charged.