iexcell 100 Pcs M4 x 8 Thread Pitch 0.7 mm Alloy Steel 12.9 Grade Hex Socket Head Cap Screws Bolts Kit, Black Oxide Finish

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【100 Pcs M4 x 8 Hex Socket Head Cap Screws + 1 Pcs Hex Key Come In a Plastic Storage Box】 ✔ Contains 100 Pcs M4 x 8 hex socket head cap screws --Meets/exceeds DIN912 --Thread size ( diameter ): 4 mm ( Range: 3.908 ± 0.07 mm ) --Thread Pitch: 0.7 mm --Thread length: 8 mm ( Range: 8.00 ± 0.29 mm ) --Screw head style: socket cap, head diameter: 7.0 mm ( Range: 7.0 ± 0.22 mm ) , head height: 4 mm (Range: 3.91 ± 0.09 mm) --Screw drive style: internal hex drives also known as hex socket drives, Hex Size: 3.0 mm --Alloy steel 40Cr, black oxide finish --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: 3.0 mm --Chrome-vanadium steel, nickel plated, higher strength, anti-rust ✔ Easy to store: 100 Pcs M4 hex socket head cap screws and 1 hex key come in a plastic storage box, organized conveniently and easily [ Package Contains ] M4 x 8-----100 Pcs Hex Key--------1 Pcs