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About IExcell 50 Pcs M4 X 30 Mm Stainless Steel 304 Hex
✔ Meets/exceeds: DIN 912, ISO 4762
✔ Material of Screws: stainless steel 304, high strength and anti-corrosion in various environments
✔ Material of Hex Key: chrome-vanadium steel, nickel plated
✔ These screws and hex key come in an easy-use separated girds storage box
Sizes--------------Thread Length------Total Length
M4 x 30 mm-----------30 mm-------------34 mm
Package Contains:
M4 x 30 mm--------50 Pcs
Hex Key---1 Pcs
Total---51 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 , also known as Allen head , 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