Black oxide hex socket countersunk bolts. DIN 7991/ISO 10642 standard, flat-head design for a flush surface. Made from high-tensile carbon steel Grade 10.9 for strong, reliable joints. Drive: hex socket (Allen key); finish provides moderate corrosion resistance in dry environments. Available in sizes M4, M5, M6, and M8 with common lengths: M4 (8mm, 12mm); M5 (10mm, 20mm); M6 (16mm, 30mm); M8 (20mm, 25mm, 30mm, 35mm). Pack options: 2, 10, 50, 100. Important: total length equals length including the head--measure from the top of the flat head to the tip. Ideal for electronics enclosures, small hinges, 3D printer builds, VESA mounts, cabinetry, automotive interiors, furniture assembly, machinery, and heavy joinery.
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