iExcell 100 Pcs M5 x 8mm/10mm/12mm/16mm/20mm Internal Hex Drive Button Head Cap Screws Kit, Alloy Steel Black Oxide Finish, 10.9 Grade

? Meets/Exceeds: ISO 7380 ? Alloy Steel, Black Oxide Finish, Tensile Strength: 10.9 Grade ? 5 Sizes : M5 x 8mm M5 x 10mm M5 x 12mm M5 x 16mm M5 x 20mm ? Screw Head Style: Button ; Screw Drive Style: Internal Hex, known as Hex-socket drives; Fully Threaded ? Thread Size(Dia.): 5mm, Thread Pitch : 0.8 mm,Head Diameter: 9.27mm/ 0.36", Head Height: 2.6mm/0.10" ? These screws come in an easy-use separated girds storage box ***Package Quantity and Specification *** ---Item---------------Thread Length-----------Total Length-------Quantity M5 x 8mm-------------8mm/0.31"---------------10.6mm-----------20 Pcs M5 x 10mm-----------10mm/0.39"--------------12.6mm-----------20 Pcs M5 x 12mm-----------12mm/0.47"--------------14.6mm-----------20 Pcs M5 x 16mm-----------16mm/0.63"--------------18.6mm-----------20 Pcs M5 x 20mm-----------20mm/0.79"--------------22.6mm-----------20 Pcs Total Quantity-------------------------------------------------------100 Pcs ***About Internal Hex Drives*** Internal hex drives, also known as hex-socket drives, are similar to hex drives, but have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench. ***About Button Head*** Button head screws are similar to standard pan head screws but have a curved top