Slotted Spring Pins
Why Choose Slotted Spring Pins?
Tubular slotted spring pins are an economical and universal shear-type fastener that is an excellent and cost-effective choice for noncritical applications and assemblies that don’t require tight tolerances. They are also an excellent choice for applications such as free-fit hinges, shafts, alignment applications, joining applications, and more, where cost is paramount.
Description
Configurations
Driv-Lok’s manufacturing methods provide the highest degree of roundness and contact area for slotted spring pins.
Materials
- High-carbon
- Spring Steel
- 420 Stainless Steel
Finishes
- Zinc Plating
- Plain Finish
- Heat Treatment
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How They’re Made
Tubular slotted spring pins are manufactured by progressive roll forming flat strips of high carbon steel or heat-treatable 420 stainless steel. After forming, the pins are deburred to remove sharp edges, then heat treated to a spring temper. High-carbon (1070-1095) steel spring pins are hardened to Rc 46-53, and 420 stainless steel spring pins are hardened to Rc 43-52. Slotted pins are designed with a gap, which allows the pin to flex during installation and absorb varying hole tolerance, hence their popularity in noncritical industrial applications.
Standard Slotted Spring Pins
Standard spring pins are manufactured to ASME B18.8.2 dimensions and come in Type A and conventional styles, which you can view in the image below. Standard finishes for high-carbon steel spring pins are either light oil or zinc. Standard stainless steel spring pins are typically passivated. Other finishes are available upon request.
Applications
Slotted spring pins will meet thousands of demanding industrial applications. They can be used in typical dowel applications and fastenings. They are also used as spacers, cotter pins, stop pins, and T-handles. In addition, they can be used to prevent shaft rotation in assemblies or as a knob-to-shaft connection. Standard spring pins can also be used in hinges in light gauge metal assemblies.
These rugged, self-locking pins have many different possible uses beyond the few listed. If you’re unsure what fastener would be best for your assembly, contact Driv-Lok and speak to our engineers. We would be delighted to assist you in finding the best possible fastening solution for your application.
Standard Spring Pin Dimensions
| A | B Max | C | Stock thickness | Recommended hole size | Minimum double shear strength (lbs) | ||||
| Nominal | Minimum 1/3 (D1+D2+D3) | Maximum (Go ring range) | Minimum | Maximum | Minimum* | Maximum | |||
| 1/16(.062) | .066 | .069 | .059 | .007 | .028 | .015 | .063 | .065 | 430 |
| 5/64(.078) | .083 | .086 | .075 | .008 | .032 | .018 | .079 | .081 | 800 |
| 3/32(.094) | .099 | .103 | .091 | .008 | .038 | .022 | .095 | .097 | 1,150 |
| 1/8(.125) | .131 | .135 | .122 | .008 | .044 | .028 | .125 | .129 | 1,875 |
| 5/32(.156) | .162 | .167 | .151 | .010 | .048 | .032 | .157 | .160 | 2,750 |
| 3/16(.187) | .194 | .199 | .182 | .011 | .055 | .040 | .188 | .192 | 4,150 |
| 7/32(.219) | .226 | .232 | .214 | .011 | .065 | .048 | .219 | .224 | 5,850 |
| 1/4(.250) | .258 | .264 | .245 | .012 | .065 | .048 | .250 | .256 | 7,050 |
| 5/16(.312) | .321 | .330 | .306 | .014 | .080 | .062 | .313 | .318 | 10,800 |
| 3/8(.375) | .385 | .395 | .368 | .016 | .095 | .077 | .375 | .382 | 16,300 |
| 7/16(.437) | .448 | .459 | .430 | .017 | .095 | .077 | .438 | .445 | 19,800 |
| 1/2(.500) | .513 | .524 | .485 | .025 | .110 | .094 | .500 | .510 | 27,100 |
*Minimum hole sizes are rounded up to 3 decimal places.
Spring Pin Length:
Up to and including 1″
Over 1″ through 2″
Over 2″ through 3″
Over 3″ through 4″
Over 4″
Tolerance:
±.015
±.020
±.030
±.035
±.040
Contact Driv-Lok today to get started!
Driv-Lok has served thousands of customers with our unique and proven approach with fastening solutions. If you’re ready to get started, or if you have any questions, don’t hesitate to contact us today.