Upgrade your construction, automotive, or engineering projects with these Unifix High Tensile Hexagon Bolts. Engineered to meet the rigorous DIN 931 standard, these M20 x 100 bolts are forged from grade 12.9 steel, offering superior structural integrity and reliability for heavy-duty applications where high clamping force is required. The standard hexagon head design ensures compatibility with professional-grade sockets and wrenches, allowing for precise and efficient installation. These bolts are specifically built for demanding environments, providing long-lasting performance and consistent durability. Whether you are assembling heavy machinery or securing structural steel, these fasteners provide the strength you need to ensure project safety. Each box contains 25 high-tensile bolts designed to handle high-stress loads without compromising performance. Product Summary: Unifix grade 12.9 hexagon bolts, M20 x 100 high tensile steel fasteners, DIN 931 compliant industrial bolts, heavy-duty construction and machinery bolts, pack of 25 high-strength steel bolts.