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Maximise efficiency and precision in your engineering endeavours with our indispensable metric bolt and screw size chart. Designed for professionals who demand accuracy, this downloadable poster offer detailed insights into ISO metric thread dimensions for bolts and screws alike.
Metric Thread Tolerances. The tolerances TD for internal threads and Td for external threads is derived from the class. The approximate tolerances can be calculated according to the below formulas. Td – Tolerance for External Major Diameter. Td2 – Tolerance for External Pitch Diameter.
Metric Bolt Grades: Metric bolts are typically labeled with numbers like 8.8, 10.9, or 12.9. The first number represents the ultimate tensile strength (UTS) in megapascals (MPa) divided by 100. For example, an 8.8 bolt has a UTS of 800 MPa. The second number represents the yield strength as a fraction of the UTS.
8 sty 1993 · Description: 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. According to: EN 1993-1-8:2005 Section 3.8. Supported National Annexes:
Metric Bolt Torque Chart. In the following table of torque specifications, you will find all the necessary torque values in Newton-meters (Nm) for common screw thread sizes and strength classes. Please note that the required torque may vary due to differences in screw strength classes and thread sizes.
In our metric screw size chart above, metric thread size is denoted by a series of numbers and letters that encapsulate various dimensions including the major diameter, thread pitch, and thread type. The most common system adhered to is the ISO Metric Screw Thread, where designations like M6x1 signify a major diameter of 6 mm and a pitch of 1 mm.
The charts below show metric bolt conversions to standard bolt conversions and DIN numbers for fasteners. To assist in ordering, we offer metric bolt conversion data for industrial bolts/rods, machine screws, and small-diameter fasteners, including approximate equivalency and common DIN numbers.
