iexcell 50 Pcs Metric M4-0.7 x 20 Alloy Steel 12.9 Grade Hex Socket Head Cap Screws Bolts Kit

• ✔ Includes 50 Pcs, M4-0.7 x 20 Hex Socket Head Cap Screws, Thread Diameter: 4 mm, Thread Pitch: 0.7 mm, Thread Length: 20 mm
• ✔ Material of Screws: Alloy Steel 40Cr, Black Oxide Finish; Strength Grade of Screws : 12.9 Grade, Hardness: HRC 39-44, Tensile Strength: 1220 N/mm²
• ✔ Includes 1 Pcs Hex Key, hex size: 3.0 mm, to Drive These Screws Conveniently and Easily
• ✔ Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength, Anti-rust
• ✔ Package: All These Screws and Hex Key Packed In a Sturdy Easy-use Plastic Storage Case, Organized Conveniently and Easily

【iexcell 50 Pcs Metric M4-0.7 x 20 Alloy Steel 12.9 Grade Hex Socket Head Cap Screws Bolts Kit】 ✔ Includes 50 Pcs M4-0.7 x 20 hex socket head cap screws, meets/exceeds DIN912 --Screw head style: socket cap, head diameter: 7.00 ± 0.22 mm, head height: 3.91 ± 0.09 mm ; screw drive style: internal hex drives also known as hex socket drives, hex size: 3.0 mm --Thread Size (diameter): 3.908 ± 0.07 mm , thread pitch: 0.7 mm, thread length: 20 mm --Material of Screws: Alloy Steel 40Cr, Black Oxide Finish; Strength Grade of Screws : 12.9 Grade, Hardness: HRC 39-44, Tensile Strength: 1220 N/mm² ✔ Includes 1 Pcs hex key, hex size: 3.0 mm, to drive these screws conveniently and easily, material: chrome-vanadium steel, nickel plated, higher strength, anti-rust ✔ Easy to store: these screws and a hex key come in an easy-use storage case [ Package Contains ] M4-0.7 x 20--------50 Pcs Hex Key-----------1 Pcs [ Internal Hex Drives ] Internal Hex Drives , also known as Hex socket hex drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench [ 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