448110 Men's Clothing Stores This U.S. industry comprises establishments primarily engaged in retailing a general line of new men's and boys' clothing. These establishments may provide basic alterations, such as hemming, taking in or letting out seams, or lengthening or shortening sleeves. The data published with NAICS code 448110 are comprised of the following SIC industry: 5611 Men's and boy's clothing and accessory stores