Standard Duty Coiled Spring Pins

SPIROL’s heavy duty & fatigue resistant Coiled Spring Pins are available in diameters ranging from 1.5mm (.062") up to 20mm (.750"). Standard materials include high carbon steel, 302/304 nickel (austenitic) stainless steel, and 420 chrome (martensitic) stainless steel. Diameters larger than 12mm (.500") are available in 6150 alloy steel. SPIROL invented the Coiled Spring Pin in 1948. Coiled Pins are available in light duty, standard duty and heavy duty to match the required strength and flexibility for each application. A pin too strong for the applied load will not flex and may damage the hole. A pin that is too flexible may fatigue prematurely within the assembly. The Coiled Pin with the optimal balance of strength, flexibility and diameter will result in the prolonged useful life of the assembly.

SPIROL is a technical resource that provides high quality components that improve the quality of your assembly, extend the life of your products and reduce your manufacturing costs. We are the leading global manufacturer of engineered fasteners, shims, installation machines, and parts feeding equipment producing over two billion components annually. In addition to high quality products, SPIROL has Application Engineers throughout the world to assist you in your designs, supported by state-of-the-art manufacturing centers and global stocking facilities to simplify the logistics of delivering your product. If you have any questions or would like complimentary Application Engineering support, please feel free to contact us at any time!

SPIROL manufactures Coiled Spring Pins out of 316 stainless steel to meet specific application requirements. Type 316 stainless steel is similar to 302/304 stainless steel with a slightly higher nickel content and the addition of molybdenum. The molybdenum content increases the chemical resistance of this alloy greatly. 316 exhibits superior pitting resistance against sea water, acetic acid vapors, chlorides, sodium and calcium brines, hypochlorite solutions, phosphoric acid, and the sulfite liquors and sulfurous acids used in the paper and pulp industry. This alloy is also austenitic, non-magnetic and non-hardenable using conventional methods. 316 stainless steel has better mechanical properties at elevated temperatures than 302/304 and offers excellent mechanical integrity at subzero temperatures. Typical applications for SPIROL's 316 Stainless Steel Coiled Pins include the following: marine, processing equipment, industrial, oil and gas and medical.

You can rely on SPIROL to be a design partner that helps solve unique problems. Because we supply many customers with similar products in similar industries, we are able to meet most needs with our standard products at no additional cost. When the solution falls outside the normal requirements, we have the expertise and engineering personnel to solve those problems. By working with SPIROL in the design stage of your project, we will develop a solution that lowers your overall product cost, improves product quality, increases the robustness of your manufacturing process, and gets you to market faster. There are a number of common special Coiled Spring Pins that SPIROL has designed over the years to meet specific performance requirements. This includes making Coiled Pins from special materials such as 316 stainless steel, beryllium copper, and Inconel, or designing Coiled Pins to meet unique application requirements resulting in custom diameters, custom lengths, special features, etc.