PSM Spring Latches are a simple reliable means of fastening removable assemblies when used with stud or peg.
Advantages
> Firm reliable grip
> Removes need for time-consuming screw fasteners
> Allows quick, easy access for inspection, repair purposes
> Assembled after finishing operations
Material
CS60, CS70 carbon steel, austempered
Method of Assembly
Squeeze fastener together with fingers or hand tool and insert through pre-stamped hole, when released the spring latch opens firmly to sides of hole.
When specifying, please state:
- Quantity
- Prefix (CBSL)
- Part No.
- Finish code (e.g. 2000 CBSL-0872-13)
Key Features
Low in-place cost due to rapid installation and minimal parts
Eliminates the need for threads, screws, or locking hardware for captive panels
Resistant to vibration and loosening due to spring action
Can be embedded after finishing operations (painting, coating)
Provides firm retention yet allows easy disassembly when needed
Self-retaining: once installed, the latch holds itself in the panel hole via its spring force
Design & Specification Guidelines
Material & Finish
Spring latches are typically manufactured from spring steel (e.g. CS60 / CS70) and heat treated for resilience. They are often plated (e.g. zinc) or passivated to resist corrosion, especially when used with plastic or coated panels.
Hole & Panel Preparation
The hole into which the spring latch seats must match the latch’s tolerance specification (neither too loose nor too tight) so that the spring legs can deflect and grip.
Burrs or sharp edges should be avoided as they may catch or bend the latch during insertion.
The panel thickness must be within the latch’s design range; too thin and the latch may over-deflect, too thick and it may not fully engage.
Installation Method
Squeeze the spring latch slightly to reduce its width, insert it into the panel hole, and release it so its spring legs expand and grip.
Ensure the latch is oriented so that its spring force applies across the correct direction (i.e. aligned with the stud or peg).
Avoid twisting or side load during insertion to prevent distortion or permanent deformation of the spring legs.
Dimensional Data & Sizes
The ideal fastener for use on access doors or removable panels. Self-retaining it provides a simple cost saving method of assembly.
Dimensions in millimetres