1/4 x 2 1/4 Tension Pin (Slotted Spring Pin) helps retain mating parts through spring force against the hole wall. Tension pin, slotted spring pin, and roll pin describe the same slotted self-retaining pin style. The published OD range of 0.258-0.264 in. is larger than the 0.250-0.256 in. recommended hole range by design.

Common uses include machine handles, knob shafts, and operator controls, where the pin retains parts without a threaded fastener. Where stainless material and precision location are both required, 18-8 Stainless Steel Standard Dowel Pins may fit the drawing better.

Since 1962, Cold Headers has helped industrial buyers locate specialty pin and socket-product configurations. 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: 1/4 in.
• Length: 2 1/4 in. +/-0.025 in.
• Pin OD Before Insertion: 0.264 / 0.258 in. (max/min)
• Recommended Hole Size: 0.256 / 0.250 in. (max/min)
• Min Double Shear: 7,050 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.