3/8 x 1 7/8 Tension Pin (Slotted Spring Pin) gives a compact spring-steel fastening option for assemblies that need retention rather than ground-pin location. The catalog term is tension pin, while many drawings use slotted spring pin and many shops say roll pin. The chamfered ends support driving from either side, while the open slot allows compression during installation.

For shaft-to-hub retention, light drives, or spacer assemblies, check the drilled-hole range, pin length, and access for driving the pin squarely. For worn precision holes, 0.001 Oversize Dowel Pins may be the better repair path than using a spring pin.

For repair operations, distributors, and OEM sourcing, Cold Headers can help match the item number, diameter, length, and standard. 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: 1 7/8 in. +/-0.020 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.