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1/8 x 4 Tension Pin (Slotted Spring Pin) is a headless spring pin for production or repair work that does not require precision dowel location. The slotted construction is the reason this same fastener is commonly indexed as a spring pin or roll pin. A normal drilled hole at production tolerance is typically the economic advantage over precision reamed dowel-pin holes.

In packaging equipment, changeover hardware, and machine covers, the headless form keeps the joint compact after installation. For blind holes where removal access matters, Pull Dowel Pins are the related locating-pin option to review.

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: 1/8 in.
  • Length: 4 in. +/-0.030 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 4 in

Quantity

 N/A 1000

Package Type

 N/A Bulk

Search

 N/A TP.1/8.4

Addtional Information

Addtional Information

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