iexcell 100 Pcs M4 x 20mm Thread Pitch 0.7 mm Alloy Steel 12.9 Grade Hex Socket Flat Head Cap Screws Bolts Kit for Screw Fix, Black Oxide Finish

• ✔ Includes 100 Pcs M4 x 20mm Hex Socket Flat Head Cap Screws , Thread Size ( Diameter ): 4 mm, Thread Pitch: 0.7 mm, Total length ( Includes Head ): 20 mm, Thread Length: 17.7 mm, Screw Head Style: Flat Head, Known as Countersunk Head, Countersunk Angle: 90 degree, Head Diameter: 7.82 mm, Head Length: 2.3 mm Screw Drive Style: Hex Socket Drive, also Known as Internal Hex Drive, Hex Size: 2.5 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
• ✔ 1 Pcs Hex Key, Hex Size: 2.5 mm, to Drive These Screws Conveniently and Easily
• ✔ Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength, Anti-rust
• ✔ Package: 100 Pcs M4 x 20mm Hex Socket Flat Head Cap Screws and 1 Pcs Hex Key Come In Plastic Storage Case, Organized Conveniently and Easily

【100 Pcs M4 x 20mm Hex Socket Flat Head Cap Screws + 1 Pcs Hex Key Come In a Plastic Storage Box】 ✔ Contains 100 Pcs M4 x 20mm hex socket flat head cap screws --Meets/exceeds: DIN7991 --Thread size ( diameter ): 4 mm --Thread Pitch: 0.7 mm --Total length ( includes head ): 20 mm ( Range: 20.00 ± 0.42 mm), thread length (approximate ) 17.7 mm --Screw head style: flat head, known as countersunk head, countersunk angle: 90 degree, head diameter: 7.82 mm ( Range: 7.82 ± 0.18 mm ), head length (approximate ) 2.3 mm --Screw drive style: hex socket drive, also known as internal hex drive, hex size: 2.5 mm --Made of alloy steel 40Cr, black oxide finish, high strength and anti-rust --Strength grade of screws : 12.9 Grade, hardness: HRC 39-44, tensile strength: 1220 N/mm² ✔ Contains 1 Pcs hex key to drive these screws conveniently and easily --Hex size: 2.5 mm --Made of chrome-vanadium steel, nickel plated, higher strength, anti-rust ✔ Easy to store: 100 pcs hex socket flat head cap screws and 1 pcs hex key come in a plastic storage box, organized conveniently and easily [ Package Contains ] M4 x 20mm-----100 Pcs Hex Key------1 Pcs [ What is Hex Socket Drive ] Hex Socket Drive, also known as Internal hex drive, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench [ What is About Flat Head ] Flat head is similar to standard pan head screws but have a curved top