Spring Pins

Custom Spring Pins Manufacturer


Spring Pins Manufacturers

Heatfastener carries a wide variety of Spring pins. we can supply the Spring pins you are looking for. If you are looking for a Spring pin that is not off the shelf, we can make it specifically to the dimensions, material, and plating that you need. Heatfastener is a full-service supply company for all your rivet needs.

Heatfastener carries dowel pins in metric (DIN 6325) and in inch size. We carry them in multiple materials such as stainless steel (300 series, 316, 416) and alloy steel. brass, copper, aluminum, etc. We also offer custom spring pins for your drawings and applications

Heatfastener Specialty Manufacturing has been working with original equipment manufacturers for over 100 years, providing excellent and timely customer service. Our team of highly trained professionals utilizes only the latest technology and processing methods to manufacture all of our flat washers. We carefully monitor each washer to be sure it is made to precision. You’ll be satisfied with the end results.


Spring pin

Spring Pins Specification

Spring pins, also known as roll pins, are designed to be put right into a hole that has a smaller diameter than the pin. The pin is sprung to make sure that it can lower in diameter when installed, allowing for a snug fit while applying a preserving pressure versus the walls of the hole.

When compressed into a hole, the pin puts pressure against the sides of it, as it tries to increase to its resting size. This pressure causes friction, which preserves the pin firmly in the red.

Spring pins are made from a slim sheet of product curved around to create the external diameter of the pin. They’re typically developed from sheet steel as well as have a chamfer at each end, enabling them to be easily pushed into the hole.

The components may preserve a component on a shaft by putting the pin through the shaft, vertical to its axis. In this situation, a pin that’s longer than the diameter of the shaft needs to be made use of. These pins may likewise be made use of to join by inserting them with concentric openings in 2 or more components.

spring pin black stainless steel
custom spring pin

Types of Spring Pins

There are two main types of spring pins: slotted and coiled pins. the materials can be stainless steel, carbon steel, etc.

Coiled spring pins: A coiled spring pin, also known as a spiral pin, is a self-retaining engineered fastener manufactured by roll forming metal strip into a spiral cross-section of 2+14 coils. Coiled spring pins have a body diameter larger than the recommended hole diameter and chamfers on both ends to facilitate starting the pin into the hole, the spring action of the pin allows it to compress as it assumes the diameter of the hole.

Slotted spring pins: Slotted spring pins are cylindrical pins rolled from a strip of material with a slot to allow the pin to have some flexibility during insertion. Slotted spring pins are also known as roll pins, Selleck pins, or “C” pins.

Grooved pins, as well as cotters, serve comparable functions as spring pins. They’re additionally designed to be forced into a hole smaller than the pin.

Unlike spring pins, however, grooved pins, as well as cotters, are strong pins. This indicates that they can hold up against higher shear forces. It also implies that they might need greater insertion pressures as well as can create enhanced anxiety around the hole.

A grooved pin is a strong pin with grooves swaged along its length, giving it slightly a lot more flexibility than a solid dowel pin. A wedge is a wedge or conical pin.

Application of Spring Pins

A spring pin is a hollow, split dowel pin that exerts uniform outward pressure when fitted into a nut or shaft hole. Also called a rolling pin, the spring pin withstands side loads and rotational friction, making it ideal for securing shaft and axle connections. Spring pins are also easy to insert and remove. For higher load applications where vibration and shocks are a problem, use a coiled spring pin. Secure machinery and components quickly and easily with Grainger spring pins.

Spiral pins are used in heavy-duty applications, with cyclic loading.

spring pin stainless steel

Spring Pins Dimension Chart Sizes

Nominal Diameter 1/165/643/321/89/645/323/167/321/45/163/87/161/25/83/4
Nominal Size0.0620.0780.0940.1250.1410.1560.1880.2190.250.3120.3750.4380.50.6250.75
Recommend Hole Sizemax0.0650.0810.0970.1290.1440.160.1920.2240.2560.3180.3820.4450.510.6360.764

We can provide custom spring pins in inches and metrics.

Need Custom Pins for Your Industry?

As a 20-year industry experience manufacturer with a factory equipped with precision machines, we can provide, from consultation to production, a one-stop solution for you.

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Frequently Asked Questions

A spring pin is an unthreaded mechanical fastener that expands to securely fit in a hole. Spring pins, also known as roll pins, are designed to be inserted into a hole that has a smaller diameter than the pin

They are crafted from alloy steel, carbon steel, and stainless steel featuring spring like elastic properties. Spring pins are used as locking devices, positioning points, anti‑chafing surfaces, shafts, or sleeves for wiring.

Things which only deform elastically (and spring back) are fine to re-use; think which deform plastically (so come out a different shape) aren’t.

Spring dowel pins are slotted pin made from high carbon spring steel (EN-42J) material having 44- 51 HRC. They can also be manufactured from stainless steel material i.e. SS- 304, SS- 420, SS- 316 etc. Spring Dowel pin is accurately made to diameter greater than the drilled hole into which it is pressed.

Other Types Of Custom Pins