• Digital

    Cotter Pins

    Stanho cotter pins feature extended prong square ends made from steel, stainless steel, and brass materials in a wide variety of dimensions. Our American made cotter pins are durable and cost effective. Read More.

  • Ospray

    Machine Keys

    Stanho offers American made imperial, metric, gib head and other custom machine keys in a wide range of dimensions to meet any of your special tolerances and requirements. Read More.

  • Plane

    Solid Pins & Dowels

    Our solid pins and dowels provide a very versatile fastening solution that can be used in a wide variety of applications across many different industries. Read More.

  • Automobile

    Woodruff Keys

    Standard Horse Nail has been making consistent and high quality woodruff keys since 1907. Our unique method of mass production is faster and more efficient than any other traditional production method. Read More.

  • Ship

    Taper Pins

    Stanho standard taper pins have a ¼ inch taper per foot and have a machined finish to increase the friction that holds everything together.. Read More.

Contact Us

Machine Keys - Pins - Fasteners

Standard Horse Nail has been manufacturing machine keys, taper pins 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.

At Stanho, no job is too big or too small. Avoid costly downtime by having Stanho mass produced keys in stock at your facility where low cost and precision quality matters the most. Our precision products are available in bulk or packaged for your convenience.

Contact us today for more information on our machine keys, woodruff keys, taper pins, cotter pins and all other custom precision product capabilities. We are introducing the capability to provide ground dowel pins, groove pins and hollow dowels/bushings.

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Woodruff Key Manufacturer

About Us

Through the 1950’s Stanho manufactured both keys and nails, as well as other fastening products.


Precision Cutting Services

We provide superior precision cutting services, including sawing and sheer cutting. We have the in-house capabilities to meet your needs. 


Custom CNC Machining

Custom Machining Services

We offer custom CNC machining services. This value added service is provided to our customers whether it is our material or their material.


Getting Started

Contact & RFQ

We invite your questions comments and requests for quotation and offer an online form to help you.