Product Review
✔Meets/exceeds: DIN 912, ISO 4762
✔Screw head style: socket cap; screw drive style: hex socket , known as internal hex drives
✔12.9 grade alloy steel, hardness: HRC 39-44, tensile strength: 1220N/mm²
✔Rust proof: black oxide finish, covered with anti-rust oil
✔These screws come in a separated girds storage case
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
Total: 100 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