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1/8 x 1 1/4 Tension Pin (Slotted Spring Pin) is a spring steel roll pin for economical retention in a drilled hole. In search and purchasing records, this part may be called a tension pin, slotted spring pin, or roll pin. Compared with a dowel-pin fit, the tension pin is usually chosen when economical retention matters more than tenths-level location.

This size is often reviewed for small gear hubs, pulley spacers, and drive accessories when a self-retaining driven pin is specified. When the design requires repeatable precision location, compare Heat Treated Steel Standard Dowel Pins with a reamed hole and ground pin.

Cold Headers brings long-running industrial fastener experience to tension-pin quoting, cross-checking, and size confirmation. 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 1/4 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.

Unit of Measure

Specifications

Brands

 N/A Cold Headers, Inc.

Diameter

 N/A 1/8 in

Length

 N/A 1 1/4 in

Quantity

 N/A 1000

Package Type

 N/A Bulk

Weight

 N/A 2.95 lb

Search

 N/A TP.1/8.1 1/4

Addtional Information

Addtional Information

 N/A They are self fitting in varying size holes and in out of alignment applications.