1/8 x 1 5/8 Tension Pin (Slotted Spring Pin) is formed oversize before installation so the slotted body can compress as it is driven. The catalog term is tension pin, while many drawings use slotted spring pin and many shops say roll pin. Compared with a dowel-pin fit, the tension pin is usually chosen when economical retention matters more than tenths-level location.

Common uses include hinge and pivot joints, covers, and small linkage assemblies, 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.

Cold Headers has supplied specialty fasteners since 1962 and helps buyers confirm exact pin sizes for maintenance or production requirements. 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 5/8 in. +/-0.020 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.