FF-S-200B Federal Specification

Nationwide Military Parts Supplier

The FF-S-200B is a federal specification that covers hexagon socket and spline socket headless setscrews. These setscrews are used in various applications, which include for use with a variety of military parts. When it comes to the size of set screws, they are classified by size based on the basic major diameter of the thread. The General Services Administration has authorized the use of this federal specification by all federal agencies. And all of the military parts we supply follow FF-S-200B.

Let's review some of the contents of these specifications.

Scope & Classification


The FF-S-200B federal specification specifies the requirements for headless setscrews with hexagon socket or spline socket heads.



Set screws shall be of the following types, as specified:

  • Type 1: Hexagon socket, headless
  • Type 2: Spline socket, headless


  • Style 1 - Flat point
  • Style 2 - Cone point
  • Style 3 - Oval point
  • Style 4 - Cup point
  • Style 5 - Full-dog point
  • Style 6 - Half-dog point

Request A Quote for Our Military Parts

Sesco Industries has years of experience providing customers across the country with a wide range of high-quality aerospace and military parts, which includes set screws. Socket set screws are a very important part for many aerospace companies. In general, a set screw is a screw with a head for threading. There is a blind set screw, which is driven with an internal-wrenching drive. These drives include a hex socket, star, square socket, or slot. Then the set screw passes through a threaded hole in the outer object and is tightened against the inner object in order to prevent it from moving relative to the outer object. The end goal of using a socket set screw is to have superior security. The amount of energy and velocity in the aerospace industry means these screws need to be able to withstand great pressures. That is exactly what you get with our manufacturing of aerospace set screws. And since we are a manufacturer of socket set screws, we can customize the set screw to better match your needs. Reach out to us today and request a free quote.

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When you reach out, we will gladly answer any questions or concerns you may have about our selection of aerospace and military parts. When you request a free quote, we can help you choose the right item for your tasks.