3/8 x 1 1/2 Tension Pin (Slotted Spring Pin) uses spring action to hold itself in a prepared hole without an added head. In search and purchasing records, this part may be called a tension pin, slotted spring pin, or roll pin. For this diameter, the free OD is 0.385-0.395 in. against a recommended hole of 0.375-0.382 in., so the oversize is intentional.
In replacement assemblies, legacy equipment, and maintenance repairs, the headless form keeps the joint compact after installation. For wet outdoor exposure, keep plain spring steel oiled and indoors or ask Cold Headers about stainless spring pins as a non-catalog item.
Cold Headers can assist when drawings, service records, and replacement needs call for an exact spring pin size. 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 1/2 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.
