FSG 31 Bearings

Since the US government uses and procures so many different parts in the federal supply chain, it is essential to have a classification system in place to categorize and keep track of said parts. This is known as the National Stock Number, or NATO Stock Number internationally, a 13-digit unique number that identifies an item and designates very specific types of information, such as the country that classified it and the general category it falls under. This 13-digit number is composed of several parts, the first being the 4-digit Federal Supply Classification Group (FSCG), which is further composed of a 2-digit Federal Supply Group (FSG) and a 2-digit Federal Supply Code (FSC). The 9 digits that follow are known as the NIIN, or National Item Identification Number, which is composed of a 2-digit NCB (National Codification Bureau) along with a unique 7-digit item number. The Defense Logistics Agency, the agency in the US Department of Defense responsible for providing logistical support to all US military branches, is also the one that assigns and regulates this NSN system.

At ASAP Semiconductor, we understand the importance that National Stock Number parts have in the supply chain, particularly in commercial, civil, and military aerospace applications. As such, we stock a large inventory of parts that fall under over thirty FSGs and hundreds of FSCs. All FSGs we carry are recognized by the Defense Logistics Agency. We are ISO 9001-2008 certified and ASA 100 accredited. One such FSG we carry, FSG 31 (Bearings), is subcategorized as follows:

• FSC 3110 – Bearings Antifriction Unmounted
  • McGill Aircraft Part Co
  • New Hampshire Ball Bearings Co
  • Timken Aerospace


• FSC 3120 – Bearings Plain
  • RBC Southwest Products
  • Rexnord Industries LIc
  • Roller Bearing Co Of America


• FSC 3130 – Bearings Mounted
  • Dresser Industries Inc
  • Safeguard Powertech Systems
  • Raytheon Company

The aforementioned list includes only a small amount of the many manufacturer lines we carry in our inventory. If you have a requirement for any parts in Federal Supply Group, browse our proprietary website ASAP-Aerospace to see how we can assist you today.