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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.
Maximum tightening torques for coarse threaded metric bolts. This chart displays values for lightly oiled threads. The tension is 85% of the proof load.
Use Prevailing Torque All-Metal Nut chart if using this style of nut. = Nominal Diameter. = Clamp Load For J429 Grade 5 and 8, FNL Grade 9, A574, Class 4.6, 8.8, 10.9 and 12.9, the clamp loads are listed at 75% of the proof loads specified by the standard. For A307 Grade A, 75% of 36,000 PSI is utilized.
The Ulitmate Metric Screw Thread Resource: Basic Dimensions, Classes, Tolerances, Formulas, Charts, and Explanations
Recommended thightening torque metric bolts. Maximum recommended tightening torque for coarse threaded metric steel bolts: Metric Bolts - Typical Tightening Torques
The following table shows the tightening torque for metric fine thread fasteners. In the List you find the metric fine torque unit in Nm and ft lbs. You can also made an conversion from the unit Nm to ft lbs and also from ft lbs to Nm.
Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM
Due to many variables that affect the torque-tension relationship like human error, surface texture, and lubrication the only way to determine the correct torque is through experimentation under actual joint and assembly conditions.
torque for metric fasteners 70% of minimum yield strength metric pv ma pv ma pv ma threads a/f n nm n nm n nm m2 4 863 0.290 1216 0.404 1461 0.488 m2,3 4,5 1245 0465 1755 0656 2099 0.785 ... bolts metric normal din 13 friction value 0.14 8,8 10,9 12,9 torque = ma preload = pv (fm)
The torque values can only be achieved if nut (or tapped hole) has a proof load greater than or equal to the bolt's minimum ultimate tensile strength. Clamp load calculated as 75% of the proof load when specified by the standard. Torque values calculated from formula T=KDF, where.
Bolt torque chart. The following chart appears in the 2019 Atlas Copco Industrial Tools and Solutions catalog. It gathers the three required variables to understand and determine the maximum recommended torque for your bolt: bolt size, bolt grade and friction.
Metric Recommended Bolt Torque. Print this page. Bolt Diameter. (mm) Recommended Torque. (Nm) Class 8.8. Class 10.9. 5.
To calculate the torque required to tighten a bolt: Determine bolt size — find the diameter and thread pitch of the bolt. Look up torque specification — use a torque chart specific to the bolt's size and material. Consider material strength — adjust for the bolt and mating material's strength.
Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners.
Metric Class Material Tensile Strength Yield Strength N/mm² psi N/mm² Psi 8.8 Steel 800 116,000 640 93,000 10.9 Steel 1040 151,000 940 136,000 ... A4-80 316 Stainless 800 116,000 600 87,000 BOLT THREAD LENGTHS BOLT STRENGTH DATA BOLT TORQUE TABLE . CADceptual Design J www.cadceptual.co.uk . Author:
Torque Table. The following suggested tightening torques provide an excellent starting point for determining torque requirements. Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication.
Metric bolt torque calculator according to VDI 2230 standard for shank bolts with metric standard thread according to ISO 262; hexagonal bolts according to DIN EN ISO 4014 to 4018, hexalobular external driving head bolts according to DIN 34800 or cylindrical bolts according to DIN EN ISO 4762 and hole ”medium“ according to ISO 273 (DIN EN ...
5/16-in diameter are in inch-pounds; diameters 3/8-in and larger are in foot-lbs. Torque values for metric fasteners up through and including M8 are in inch-pounds; diameters M10 and larger are in foot-lbs.
SizeUNRC Torque (N•m) Inch Metric Size Nominal Tightening Torque Nominal Tightening Torque ... Inch & Metric Fastener Chart ... Nominal Tightening Torque Nominal Tightening Torque Size (In-Pounds) Size (N•m) 1/4 5/16 3/8 1/2 5/8 3/4 1 50 125 265 470 1,150 2,000 4,000 M5 x 0.8 M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 ...
Maximum tightening torques for US bolts. This chart displays values for lightly oiled threads. The tension is 70% of yield strength.