The most common meaning of FSC number is a Federal Supply Class code: a 4-digit number used by the U.S. government and NATO to group similar items of supply, such as screws, gaskets, or hardware. In this system, the FSC is part of the larger National Stock Number structure, where the first four digits indicate the supply class.

What it means

  • FSC stands for Federal Supply Class.
  • It is a 4-digit code.
  • It groups products into logical categories for inventory and procurement.

Example

  • An NSN like 5305-01-234-5678 uses 5305 as the FSC, which is the class for screws.

Possible second meaning

Sometimes people use “FSC number” to mean an FSC certification code for Forest Stewardship Council products, which is a traceability number on certified wood or paper goods. That code helps verify that the product comes from an FSC-certified source.

Which one applies

If you saw the term in a government, logistics, or defense context, it almost certainly means Federal Supply Class. If you saw it on paper, packaging, furniture, or wood products , it likely refers to the FSC certification number.

Would you like the FSC number meaning for government contracting or for the Forest Stewardship Council?