PRECISION FASTENERS
Taper
Pins
One of the oldest, simplest pin designs in the fastener industry — solid, cylindrical, with a constant taper. Standard, threaded, metric and custom variants available from a wide range of corrosion-resistant materials.
1907
Taper Rate
¼″ / Foot
Standard pins
Surface Finish
Machined
Friction retention
Stainless Options
303 · 316
Corrosion resistant
Exotic Alloys
Monel · Hastelloy
Specialty builds
— PRODUCT CATALOG
Four Taper Pin Variants
Standard Horse Nail has been manufacturing machine keys and other precision fasteners in the USA since 1872. All of our precision products are produced with the high degree of accuracy demanded by the USA and military standards in all analyses. Stanho precision products offer new concepts in reliability, service, value and quality.
We build strong relationships with all of our customers that are seamless and worry free. Our commitment to quality and unique method of mass production has allowed us to become one of the largest domestic producers of machine keys, woodruff keys, taper pins and other precision fasteners. We are proud of our ISO-9001 certification and being TS-16949 registered, both of which ensure the continuous improvement of our product quality and customer service.
Some of our capabilities include milling, both vertical and horizontal, turning, cut-off, grinding, drilling, taping, threading, knurling and many other processes. We also offer precision cutting and custom machining services.
Standard Sample Pin = Pin Number X Taper Length
Non-Standard Sample Pin = Large Diameter X Taper Length
Standard Taper 1/4″ to 12
When ordering sizes other than those included in the above list, specify the length and diameter at the large end. Standard reamers are available for pins given above the line.
Pins nos. 11 (size .806), 12 (size 10.32), 13 (size 1.241), and 14 (size 1.523) are special sizes — hence their lengths are special.
TYPES: COMMERCIAL TYPE
Sizes: 7/0 to 14
Tolerances on Diameter: +0.0013, -.0007
Taper: 1/4 inch per foot
To find the small diameter of a pin, multiply the length by 0.02083 and subtract the result from the large diameter. For more information about our standard steel taper pins, call us today at 724.846.4660 or click here to contact us.
Stanho manufactures a wide variety of stock industry standard threaded taper pins to meet your unique specifications. We offer several varieties of threaded pins including threaded small end taper pins and precision ground taper pins.
Threaded taper pins differ from standard or plain taper pins because the end of the pin has a thread machined into the pin to allow removal if necessary. Threads are produced to meet precision specifications to ensure the fit and tolerances are correct and do not deter from the application performance. Threaded taper pins can have external threads on the outside surface or internal threads located on the internal surface machined into one end.
Threaded taper pins are .002″ smaller on the large end diameter than standard pins to allow the thread to be inserted approximately 3/32″ deeper into the taper-reamed hole. The large end of the pin is recessed below the surface which allows the nut to bear on the surface when tightened to pull the pin out.
Standard Horse Nail’s metric taper pins are turned from bar stock with a ¼” taper per foot and are made from steel but can also be made using stainless steel, alloy steel or brass. These cylindrical pins feature a tapered length and function as a locating or fastening device used in assemblies.
The metric taper offers more surface contact area than a straight pin of similar diameter, and acts like a wedge because taper pins self-lock. As they are seated a friction force develops along the whole length and diameter of the pin which locks the pin in place. Tapered pins offer a better solution over screws in that screws are prone to working loose unless locked, but it will cost a lot more money than a taper pin and reamed hole.
Taper pins are designated as either standard or as metric. Standard pins use the English or imperial measurement units (inches and fractions), Metric pins use dimensions in mm millimeters and is synonymous with DIN and ISO Standards. DIN is the German Institute for Standardization and ISO stands for “International Organization for Standardization”. Standard Horse Nail makes a large selection of metric taper pins in different styles and metric sizes to meet your application requirements. Our team is happy to assist you in selecting the correct metric taper pin for your needs.
When standard or threaded taper pins don’t match your needs, Standard Horse Nail offers special and custom taper pins specifically designed to meet your specifications. Our special taper pins are made to order, including the material and heat treating needed.
Technical Overview
Trusted Taper Pins
Manufacturing
Taper pins are one of the oldest, simplest pin designs in the fastener industry. They are a solid, cylindrical pin with a constant taper that runs the length of the pin used for either fastening or locating. Stanho standard taper pins have a ¼ inch taper per foot and have a machined finish to increase the friction that holds everything together. In addition to standard, we offer threaded, metric and custom taper pins. All of our pins are easy to install, reliable and very cost effective. Taper pins are primarily used for pumps, in oil and gas applications. They are also used in some electronics, ship building and the aerospace industry. Depending on the particular application, a wide variety of materials can be used to prevent corrosion and to specifically meet the demands for locating or fastening.
Stanho can produce custom taper pins from any material required to meet your application needs. Our taper pins are made from free machining steel, 303 stainless steel, 316 stainless steel and carbon steel. Some of the other common materials include higher carbon content steel and alloys such as high performance nitronic 50 duplex, super duplex, alloy 20, hastelloy or monel.
4
Taper Pin Types · 10+ Materials
Length Range
3/8″ to 10″ standard
Stainless Option
303 / 316 for corrosive environments
Custom Finish
Zinc, nickel, black oxide on request
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Need Custom
Taper Pins?
Don’t see the taper pins you were looking for? We can meet all of your custom taper pin needs — any material, any size. Call us at 724.846.4660 or send us your print for a fast quote.