Coiled Pin Standards
Technifast coiled spring pins are available in standard (ISO 8750) and heavy (ISO 8748) to provide for different requirements of strength, flexibility and diameter.
- Heavy Duty: ISO 8748, BS 7057, DIN 7344: Heavy duty roll pins are typically used in high shear strength applications and hardened host materials.
- Standard Duty: ISO 8750, BS7058, DIN 7343: Standard duty coiled spring pins offer the best balance between flexibility and strength and are recommended for most applications.
- Spring steel CS 67 and DIN 17222, hardened and tempered to HV 42-520
- Stainless steel A2
Coiled pins are normally supplied with a plain oiled finish. Steel pins may be given a protective finish such as zinc or phosphate, but for electrolytically applied finishes it is essential to de-embrittle the pins immediately after plating. We recommend non-electrolytic finishes or stainless should be used for safety-critical applications. Where pins are to be used in plastic assemblies, it is recommended they are de-oiled before use to avoid embrittlement of the plastic.
Read our blog post detailing the types of spring pins available and how they differ.