 Fastenal Co. FAST, -2.22 disclosed Monday that while its total workforce increased by 0.7 last year, but fell 1.6 in the U.S. The maker of fasteners, tools and manufacturing supplies said in its 10-K filing with the Securities and Exchange Commission that it had 20,507 full and part-time employees worldwide as of Dec. 31, 2021, up from 20,365 employees at the end of 2020. Included in the total for 2021 was 16,548 employees located in the U.S., down from 16,820 a year ago. 