The U.S. Department of Defense created the National Stock Number system in order to create a uniform naming system for all the components that are sourced, stocked, and procured within the federal supply system. NSNs are 13 digit serial numbers that classify and describe an item. Within the NSN are the smaller classification numbers, Federal Supply Group, Federal Supply Class, country code, and National Item Identification Number. Typically in the format, XXXX-XX-XXXXXXX, the first two digits of the NSN are the Federal Supply Group. The following two digits are the Federal Supply Class. The FSG and the FSC can be referenced in the Department of Defense’s H2 handbook. FSG 16: Aircraft Components and Accessories We stock parts under FSG 16 and the following FSCs:

• FSC 1610 - Aircraft Propellers and Components

  Any parts that convert rotary motion into propulsive force

• FSC 1615 - Helicopter Rotor Blades, Drive Mechanisms and Components

  Any parts that assist on the rotary wing motion of any rotorcraft

• FSC 1620 - Aircraft Landing Gear Components

  Any part that supports an aircraft while it is landing or not flying

• FSC 1630 - Aircraft Wheel and Brake Systems

  Any parts that support the movement of an aircraft while it is on the ground

• FSC 1650 - Aircraft Hydraulic, Vacuum and De-icing System Components

  Any parts that make up the components of the aircraft that provide power

• FSC 1660 - Aircraft Air Conditioning, Heating and Pressurizing Equipment

  Any parts that assist on controlling temperature and climate

• FSC 1670 - Parachutes, Aerial Pick Up, Delivery, Recovery Systems and Cargo Tie Down Equipment
• FSC 1680 - Miscellaneous Aircraft Accessories and Components

The number 1615 classifies helicopter rotor blades, drive mechanisms and components used in rotor blades and helicopter drive mechanisms. Also, those specially designed parts that transmit to the rotary rudder and the rotary wing. 1640 stands for aircraft control cable products, which are wire stands, wire rope, control pulleys, and wire rope. Aircraft air conditioning, heating, and pressurizing equipment like the fixed oxygen system, cabin pressure regulators, cabin supercharging equipment, and air expansion turbines are classified under 1660. Another class in the Aircraft Component and Accessories is class 1680, which is miscellaneous aircraft accessories and components that include control assemblies, ventilators, electric windshield wipers, etc.

Here at ASAP Semiconductor we provide competitive quotes and ensure all our parts are delivered on time, in the correct condition. Call us at 1-412-212-0606 or email sales@oneclickpurchasing.com to talk to a dedicated account manager today.