Coil Pins

Coiled spring pins broaden the scope of non-threaded tension fasteners. Coiled pins enhance the tried and true, all purpose fastening characteristics of slotted spring pins. This is accomplished by way of the distinctive 2.25 coil wrap feature. This feature is prominent by the layering of lighter wall thickness material. This layering effect produces a most resilient and versatile component.

Roll Pins Advantages:

  • Absorbs Shock and Vibrations
  • Uniform Length and Flexibility
  • Equal Stress Distribution
  • Controlled Radial Shock
  • Conforms To Out Of Round Hole
  • Swaged Chamfers
  • Accommodates Wider Hole Tolerances
  • Reduces Fastener Costs

  • SPC Control
  • Lot Control
  • Package/Bulk
  • Special Length

The essence of a spring pin – either a slotted pin or a coiled pin – is that it is made to a controlled diameter which is larger than the hole into which it is to be inserted. The “nominal diameter” is a convenient call out to identify pin size. The actual diameter before insertion is expressed as a minimum/maximum range. This feature is common to both slotted and coiled spring pins.

Coiled pins really begin to distinguish themselves during installation. As a coiled pin is pressed into a hole, the coils absorb the compression from the outer wrap to the inner wrap and equally distribute stresses throughout the pin. Coiled pins continue to flex after installation and when a load is applied. Coiled pins can be installed without regard to the direction of the applied load because the 2.25 coil wrap absorbs shock and vibration. The coiled pin offers greater radial contact as there is a minimum of 270° of contact in the hole. This increased contact contributes to better load distribution and decreases the potential for hole damage – especially when the hole is in soft or thin material or close to the edge of the application. Coiled pins allow for wider hole tolerances and conform better to out of round and tapered holes.

Vogelsang coiled pins are available in two duty classifications. They are Standard Duty (sometimes referred to as Medium Duty) and Heavy Duty. Light Duty classification pins quoted upon application and subject to minimum production runs. The lighter wall thickness and inherent flexibility of the Standard Duty pin make it very appealing for use in more malleable or pliant applications. Heavy Duty pins offer superior shear strength and are highly recommended for applications where loading and stress factors are elevated.