1/2 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 0.513-0.524 in. is larger than the 0.500-0.510 in. recommended hole range by design.

Common uses include conveyor guards, guide components, and light-duty brackets, where the pin retains parts without a threaded fastener. When the design requires repeatable precision location, compare Heat Treated Steel Standard Dowel Pins with a reamed hole and ground pin.

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: 1/2 in.
• Length: 2 1/4 in. +/-0.025 in.
• Pin OD Before Insertion: 0.524 / 0.513 in. (max/min)
• Recommended Hole Size: 0.510 / 0.500 in. (max/min)
• Min Double Shear: 27,100 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.