Spring pins (also known as roll pins or tension pins) are a type of fastener that lets you securely fix various parts of a machine together acting as a self-retaining fastener between the parts. The spring pins diameter is bigger than the diameter of the hole it will be inserted into.

RS have a great range of fasteners including spring pins which come in various lengths with diameters from 2 mm to 5 mm which feature great strength and flexibility.

Types of Spring Pins

Coiled - popular self container fastener and features a coiled spring that expands when placed into a hole. Can absorb shock and vibration

Slotted spring pins - also referred to as C pins and feature rolled strips of metal materials such as steel, stainless steel and aluminium that have a slot which lets the pin flex and expand when inserted into a hole.

How do Spring Pins work?

Spring pins have a spring that compress and expands once it has been inserted into a hole, causing the spring pin to compress against the sides of the hole. They hold their position by spring tension.

Typical Applications

Spring pins are a common type of mechanical fastener and can be found in various applications including:

Machinery
Furniture
Cars
Electrical industries