Amazon.com: M3 M4 M5 M6 Hex Socket Set Screws with Cup Piont Assortment Kit,Grub Screws,Brass,260 Pieces : Industrial & Scientific
Amazon.com: Socket Set Screw, Cup Point, 4-40 x 3/32", Alloy Steel, Black Oxide, Hex Socket (Quantity: 100) Coarse Thread, 4 Grub/Blind/Allen/Headless Screw, Length: 3/32 inch : Industrial & Scientific
Amazon.com: Solid Brass hex Head Cap Screws Bolts 1/4-20 X 1-1/4 Qty 25 : Industrial & Scientific