1/8 x 2 1/2 Tension Pin (Slotted Spring Pin) is a slotted roll pin selected when a normal drilled hole is preferred over a reamed dowel-pin hole. Tension pin, slotted spring pin, and roll pin describe the same slotted self-retaining pin style. The chamfered ends support driving from either side, while the open slot allows compression during installation.
This size is often reviewed for electronics assemblies, appliance hardware, and light mechanical frames when a self-retaining driven pin is specified. For worn precision holes, 0.001 Oversize Dowel Pins may be the better repair path than using a spring pin.
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: 2 1/2 in. +/-0.025 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.
