1/8 x 1/2 Tension Pin (Slotted Spring Pin) gives a compact spring-steel fastening option for assemblies that need retention rather than ground-pin location. The catalog term is tension pin, while many drawings use slotted spring pin and many shops say roll pin. As the pin enters the hole, the slotted wall compresses and the spring steel reacts outward against the hole surface.

In electronics assemblies, appliance hardware, and light mechanical frames, the headless form keeps the joint compact after installation. Where stainless material and precision location are both required, 18-8 Stainless Steel Standard Dowel Pins may fit the drawing better.

Cold Headers can assist when drawings, service records, and replacement needs call for an exact spring pin size. Review the verified OD, hole-size, shear, and length-tolerance data before matching this pin to a drawing or service record.

Technical Highlights

• Nominal Diameter: 1/8 in.
• Length: 1/2 in. +/-0.015 in.
• Pin OD Before Insertion: 0.135 / 0.131 in. (max/min)
• Recommended Hole Size: 0.129 / 0.125 in. (max/min)
• Min Double Shear: 1,875 lbs
• Material: Spring Steel (cold rolled, hardened and tempered)
• Ends: Chamfered both ends
• Style: Slotted (also called spring pin / roll pin)
• Dimensional Standard: ASME B18.8.2

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.