Push Knob Detent Pins

Push Knob Detent Pins are precision quick-release components designed for secure fastening and rapid removal in mechanical assemblies. Each pin is built with three core elements — a flange for grip, a pull ring for chain attachment or secondary removal and a push-knob mechanism that controls the locking action.

The operating principle is simple but highly effective: pressing the knob compresses internal springs which retract the ball bearings and free the pin for removal. Once released the bearings re-engage to lock the pin back into place. This ensures consistent and repeatable performance in applications where fast adjustment or frequent disassembly is required.

Manufactured from A2 stainless steel these pins offer excellent resistance to wear and corrosion making them well suited for demanding environments such as fitness equipment, marine fittings, outdoor structures and industrial jigs or fixtures. The pull ring is dual purpose functioning both as a secure anchor point for a retaining chain to prevent misplacement and as an alternative removal method when quick extraction is needed.

For correct installation the receiving hole should be machined to 0.1mm larger than the pin body diameter. This tolerance ensures smooth insertion and removal while maintaining a snug and reliable fit.

Key advantages include:

• Tool-free quick release and re-engagement
• Long service life thanks to stainless steel construction
• Secure locking action provided by spring-loaded ball bearings
• Flange and pull ring design for versatile handling
• Fully compliant with RoHS, REACH, Conflict Materials and California Prop 65 standards

Commonly found in the UK fitness industry these pins are used to adjust load settings on gym equipment but their versatility extends across automotive, aerospace, marine and manufacturing sectors where safety and speed of adjustment are vital. Fitness and gym equipment applications include adjustable weight machines where gym weight pins are essential for fast load selection and secure locking during repeated use.

Push Knob Detent Pins offer a reliable and efficient fastening method for applications that require rapid adjustment or secure locking under load. Their corrosion resistance and ease of use make them suitable for both commercial gym use — such as weight pins to add load — and wider industrial environments where strength and speed are essential.

Can't find the Detent Pin you are looking for? Call our expert team on 01233 713581 and we will be happy to help.

Frequently Asked Questions (FAQ)

• What are Push Knob Detent Pins used for? They are commonly used in equipment that requires quick adjustments such as fitness machines, manufacturing jigs and portable assemblies.
• How do Push Knob Detent Pins work? Pressing the knob compresses the internal springs which retract the locking ball bearings so the pin can be removed. Releasing the knob locks the pin back in place.
• Why is A2 stainless steel used? A2 stainless steel provides excellent corrosion resistance ensuring the pins perform well in both indoor and outdoor conditions including damp or humid environments.
• How should they be installed? For a secure fit the hole should be drilled 0.1mm larger than the pin body diameter allowing smooth insertion and reliable locking.
• Can a retaining chain be fitted? Yes. The pull ring is designed as an anchor point for a retaining chain reducing the risk of the pin being misplaced during use.

Want to know more about detent pins? Check out our blog right here: Why Detent Pins are Essential for the Agricultural Industry.