This sale is for 20 new old stock 5/16"-24 tpi X 1 1/4" long threads fillister head slotted machine screws. These are steel and are probably 50 years old or older. Made in USA. Again, you are purchasing 20 screws. These particular screws may or may not have some very minor surface rust. We have purchased a large amount of fillister head screws up to 5/8" diameter and will be listing them soon. Please see pictures and ask questions if you have them. We describe our items as accurately as possible. We do not know everything, so look at the photos as well as reading description completely. I will ship internationally and will combine shipping on multiple purchases.