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8 sty 1993 · The standarized properties of metric bolts are specified in the international standard ISO 898-1:2009 'Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread'.
The design tables also include section property, member resistance and ultimate load tables calculated according to BS EN 1993-1-1: 2005 and its associated National Annex. The tables are preceded by a comprehensive set of explanatory notes. Section ranges include universal
steel — Part 1: Bolts, screws and studs (ISO 898-1:1999) EN 20898-2 , Mechanical properties of fasteners — Part 2: Nuts with specified proof load values — Coarse thread (ISO 898-2:1992)
The preload stress can be calculated from the tightening torque using: Where: T = applied torque. K = torque coefficient (typically between 0.2 and 0.3, depending on lubrication and bolt material) dnom = nominal diameter of the bolt. Typically, bolt preload is about 70% of the bolt’s ultimate tensile strength the bolt.
bearing strength of the plate. The design bearing strengths are given for different bolt spacings (2.67db and 3db), different Fu (58 and 65 ksi), and different bolt diameters (5/8 – 1-1/2 in.) Table 7-12 also includes the spacing (sfull) required to develop the full bearing strength.
1 sty 1993 · Design aid - Table of design material properties and mechanical properties for structural steel including density, yield strength fy, ultimate strength fu and elastic modulus E. According to: EN 1993-1-1:2005+AC2:2009 Sections 3.2.1, 3.2.6. Supported National Annexes:
1 sty 1993 · Design aid - Table of design properties for individual metric hexagonal bolts including stress area, yield strength, ultimate strength, shear resistance, tensile resistance, interaction between shear and tension, bearing resistance, punching shear resistance
