M14 (14mm x 40mm) Hex Bolt (Fully Threaded Setscrew) - Steel (Pack of 5)

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The Engineering ToolBox (2018). Metric Bolts - Minimum Ultimate Tensile and Proof Loads. [online] Available at: https://www.engineeringtoolbox.com/metric-bolts-minimum-ultimate-tensile-proof-loads-d_2026.html [Accessed Day Month Year]. They are often used to secure engines and drives, alongside a host of other demanding applications. For full table with more Property Classes - rotate the screen! Metric Bolts - Fine Threads - Minimum Ultimate Tensile Loads Thread The higher the class, the stronger the bolt. The most common metric bolt classes are Class 8.8, Class 10.9, and Class 12.9. Lower and higher classes exist, but do not see as much use. Identify the class by the embossed number on the head, then find the size of your bolt in the chart. The ideal tightening torque can be found listed in two columns to the right.

For full table with more Property Classes - rotate the screen! Metric Bolts - Coarse Threads - Proof Loads Thread These values should only be used when the machine manufacturer has not provided their own. Fine pitch bolts also have different torque levels generally specified in the manufacturer’s documentation. They have a proof load of 970 MPa, minimum yield strength of 1100 MPa, and a minimum tensile strength of 1220 MPa. Class 12.9 bolts come in sizes ranging from 1.6 mm to 100 mm. Ultimate Tensile and Proof loads for metric bolts according ISO 898-1 "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 metric classes adhere to ISO standards, set by the International Standards Organisation, that apply across most industrialized nations. The “wet” column indicates lubricated bolts, whereas the “dry” column indicated unlubricated bolts. Metric Class 8.8 Bolt Torque Chart Refer to the charts below, which show the ideal tightening torque for each bolt grade for a variety of sizes. They are made of quenched and tempered medium carbon steel and can be plated with a variety of materials, most commonly zinc.

They have a proof load of 830 MPa, minimum yield strength of 940 MPa, and a minimum tensile strength of 1040 MPa. Class 10.9 bolts come in sizes ranging from 5 mm to 100 mm.For full table with more Property Classes - rotate the screen! Metric Bolts - Coarse Threads - Minimum Ultimate Tensile Loads Thread We hope these metric bolt torque charts have helped you discover the correct tightening torque for the bolts you use. These metric bolt torque charts show the ideal tightening torque for class 8.8, 10.9, and 12.9 bolts for both wet and dry tightening. The bolt’s class indicates its material strength, with higher numbers meaning higher tensile and yield strength. The classes are set by the International Standards Organisation or ISO. For full table with more Property Classes - rotate the screen! Metric Bolts - Fine Threads -Proof Loads Thread