3/8 x 5/8 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 0.385-0.395 in. is larger than the 0.375-0.382 in. recommended hole range by design.

This size is often reviewed for sheet metal stacks, alignment-plus-retention work, and panel assemblies when a self-retaining driven pin is specified. If the joint must locate parts precisely rather than retain them economically, a dowel pin is usually the product family to check.

Cold Headers supports hard-to-find pin sourcing, including uncommon lengths and exact diameter-length combinations. 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: 3/8 in.
• Length: 5/8 in. +/-0.015 in.
• Pin OD Before Insertion: 0.395 / 0.385 in. (max/min)
• Recommended Hole Size: 0.382 / 0.375 in. (max/min)
• Min Double Shear: 16,300 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.