Economical Tri-Wing Screws are the common choice for high volume assembly operations while offering a minimal degree of security. Machine screws & sheet metal screws are offered in a Pan-Head design and Opsit® reverse thread. AFT Fasteners offers a full selection of Tri Wing screws ranging in sizes from #4 up tp #10 and lengths from 1/4" up to 1-1/2". All Tri Wings screws are stainless steel. Shop our online selection or contact us for a custom quote on bulk quantities.