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.

Federal Supply Group 41: Refrigeration, Air conditioning, and Air Circulating Equipment. We stock parts under FSG 41 and the following FSCs:

• FSC 4110 - Refrigeration Equipment
• FSC 4120 - Air Conditioning Equipment
• FSC 4130 - Refrigeration and Air Conditioning Components
• FSC 4140 - Fans, Air Circulators, and Blower Equipment
• FSC 4150 - Vortex Tubes and Other Related Cooling Tubes

This federal supply group is a smaller supply group that includes refrigeration equipment, scientific refrigerators, mortuary refrigerators, commercial refrigerators, grocery type showcases, and many more. We provide assistance for these parts 24 hours a day, 7 days a week, 365 days a year. We have an instant response for part requirements for FSG 41, so visit us at www.oneclickpurchasing.com or call us at +1-412-212-0606.