iExcell 100 Pcs 12.9 Grade M4 x 8mm/10mm/12mm/14mm/16mm Alloy Steel Hex Socket Head Cap Screws Bolts Assortment Kit

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About IExcell 100 Pcs 12.9 Grade M4 X

✔  Meets/exceeds: DIN 912, ISO 4762 ✔  Material of Screws: 12.9 grade alloy steel, hardness: HRC 39-44, tensile strength: 1220N/mm² ✔  Screws Rust proof: black oxide finish, covered with anti-rust oil ✔  These screws and Hex Key come in a separated girds storage case [ Sizes ] ------------[ Thread Length ]-----[ Total Length ] M4 x 08mm-----------08mm--------------12mm M4 x 10mm-----------10mm--------------14mm M4 x 12mm-----------12mm--------------16mm M4 x 14mm-----------14mm--------------18mm M4 x 16mm-----------16mm--------------20mm Package Contains: M4 x 08mm ----------20 Pcs M4 x 10mm ----------20 Pcs M4 x 12mm ----------20 Pcs M4 x 14mm ----------20 Pcs M4 x 16mm ----------20 Pcs Hex Key ------1 Pcs Total: 101 Pcs 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 Socket Cap Head Socket Cap Head screws, also known as Allen head screws, have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key