iExcell 50 Pcs M5 x 20mm / 25mm / 30mm / 35mm / 40mm 10.9 Alloy Steel Hex Socket Button Head Cap Screws Kit, Black Oxide Finish
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iExcell 50 Pcs M5 x 20mm / 25mm / 30mm / 35mm / 40mm 10.9 Alloy Steel Hex Socket Button Head Cap Screws Kit, Black Oxide Finish
✔ Screw Head Style: Button; Screw Drive Style: Hex Socket, Known as Internal Hex Drives ✔ 10.9 alloy steel, hardness: HRC 32-39 ✔ Rust proof: black oxide finish covered with anti-rust oil ✔ Easy to store: These screws come in an easy-use storage case
Item--------Thread Length------Total Length M5 x 20-----20mm/0.79"------22.6mm/0.89" M5 x 25-----25mm/0.98"------27.6mm/1.09" M5 x 30-----30mm/1.18"------32.6mm/1.28" M5 x 35-----35mm/1.38"------37.6mm/1.48" M5 x 40-----40mm/1.57"------42.6mm/1.68"
About Hex Socket Drives  Hex Socket drives, also known as Internal Hex drives, 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 is similar to standard pan head screws but have a curved top