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Coiled Spring Pins

Heavy Duty Coiled Spring Pins

SPIROL’s heavy duty 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.

Generally, heavy duty Coiled Spring Pins are recommended for use in hardened materials where design limitations restrict the use of a larger diameter standard duty Coiled Pin.

Application Engineering Assistance: If you would like assistance in selecting the proper diameter and duty Coiled Spring Pin for your assembly, please Request Engineering Support! We are here to help!

Shop Our Heavy Duty Coiled Pins: For small quantities, click the Shop Now button below. For larger quantities or custom requests, please Request a Quote and one of our team members will get back to you quickly!

(ISO 8748, ASME B18.8.3M)

Metric Sizes - Heavy Duty

SPIROL's heavy duty metric Coiled Spring Pins conform to ISO 8748 and ASME B18.8.3M. Ranging in diameter from 1.5mm up to 20mm, these heavy duty Coiled Pins are offered in high carbon steel, 6150 alloy steel (for diameters 16mm and larger), 302/304 nickel (austenitic) stainless steel and 420 chrome (martensitic) stainless steel.

(ASME B18.8.2)

Inch Sizes - Heavy Duty

SPIROL offers inch (imperial) heavy duty Coiled Spring Pins in diameters ranging from .062" (1/16) up to .750" (3/4). Standard materials include high carbon steel, 302/304 austenitic (nickel) stainless steel, and 420 martensitic (chrome) stainless steel; as well as 6150 alloy steel for diameters .625" (5/8) and larger. Heavy duty inch Coiled Pins conform to ASME B18.8.2.

Customizable Solutions

If you are unable to find the heavy duty Coiled Spring Pin in the diameter, length, material, or finish that you require within our standard offering, or if you are unsure what Coiled Pin is most appropriate for your assembly, Request Technical Support from our team and we will help you find the most cost-effective solution for your application.

Request Engineering Support
Your Total Assembly Solution

Installation Technology for Pins

In addition to a comprehensive line of engineered components used for joining and assembly, SPIROL also offers a full range of Pin Installation Equipment designed to facilitate cost-effective and high quality assembly of your products. Our installation solutions range from manual machines to fully automatic work cells with statistical process control and error-proofing options. We are the only company of our kind that offers the total integrated solution.

Explore Pin Installation Equipment

Application Success Stories

Local Design, Global Supply.

SPIROL has Application Engineers throughout the world to assist you in your designs, supported by state-of-the-art manufacturing centers and worldwide stocking facilities to simplify the logistics of delivering your product.

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Have a manufacturing issue you can't solve? Our engineering experts love a challenge. Recommending efficient solutions for your application requirements is what we do best. Give us a call or fill out the form below to connect with us!

+1 519 974 3334