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# metric bolt torque calculator

If you introduce the screw standard and thread size you will have the link to the recommended 3D models tools in order to check the required space to apply torque and to remove the screw. 8 1/2 in Depth (In.) Metric bolt grades and strength calculator to show proof strength, tensile strength, Vickers / Brinell hardness, minimum breaking torque and stress area of metric bolts and screws made of carbon steel and alloy steel with designations 4.6, 4.8, 5.8, 8.8, 9.8, 10.9 and 12.9. Fasteners - Bolts, nuts and threaded rods - torque, tension and loads; Related Documents . T = K F d (1 - l/100) (1) where. Mach. 1) Enter thread diameter nominal value in section Thread Size. d = nominal bolt diameter (m, ft) Metric Bolt Torque Calculator. Bolt Torque Calculator The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. This calculator is based on the VDI 2230 guideline. The proof load itself is usually 85% to 95% of a boltâs yield strength, but the clamp load is significant because it is what ultimately provides the clamping pressure. T = K x D x P. Visit the "How a Load Cell Works" page! This will help to check that the design is easy to mantain and prevent future redesign process during the assembly. 11 in Width (In.) âTake benefit from our engineering know how and calculate the max. The above calculators can not be copied or reproduced without written permission from FUTEK Advanced Sensor Technology, Inc. © 1998–2020 FUTEK Advanced Sensor Technology, Inc. All rights reserved. Bolt Data: Size: ... K Factor is a torque coefficient between bolt and receptacle. mm These formulae may be used for bolts outside the range of â¦ English . Copyright © 1998-2020 FUTEK Advanced Sensor Technology, Inc. All rights reserved. Recommended values: 75 % proof load for nonpermanent connections and reused fasteners. This application is utilizing FUTEK’s TDF Torque Sensor to verify the precision of a torque wrench. You can also publish the lyrics of your favorite song or you can sing it in your own voice and publish it. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. kN. Some notes from ISO 898 metric screw threads standards: 1) stress by torsion is relaxed after tightening. We are often asked what torque value should be used with a specific nut/bolt assembly. Bolted Joint Torque Explanation and Calculation . Your coefficient will depend on the material of your bolt/nut, the type of lubrication (or, rarely, the lack of lubrication) and the size of the bolt. 4) In section Coefficient of Friction either select one lubrication condition (faster and surface combination) with the "Select Friction condition" option or enter manually or let the default value in the right part of the page, once you have selected Unknown option. For me, it all started with writing my diary for a student. tightening torque and preloads for many iso-metric and imperial screws. This online metric bolt torque calculator is used to find the torque of the ecoguard, lubricated and dry metric bolts. Want to learn more about Strain Gauge Load Cell? ; Torque extension for setting correct values; Torque tension to identify precise levels of torque â¦ LUBED: DRY. Where major diameter is: This nominal value allows us to calculate based on the ISO 965: "Metric (ISO) Screw Coarse series (M)", the pitch(P),d2 and d0(that is d3 in the image) values of the torque formula. SAE and Metric Fastener Torque Specifications Rev A July 2016 . Example Calculation - Metric Units. First, itâs helpful to understand that torque is a rotational force that is equal to a linear force times the distance â¦ Click on info button for more info. Load applied to either the bolt or tapped unit. Torque is the amount of force applied on the bolt. By : bindrdn.waterefficiency.co. That figure is about right for a low tensile bolt. $Note 2:$ In the case of do not know the constact surfaces material the calculator will assign a friction coefficient of 0,1 (($\mu$) is 0,1). Bolt Torque Calculator - Calculate required bolt torque; Improvised Torque Wrench - Improvised torque wrench with luggage scale; ISO 724 - Metric Threads - Dimensions of metric threads according ISO 724; Metric Bolt Head and Wrench Size - ANSI/SO, DIN and JIS bolts $P$ : pitch of the thread in milimeters; it has been obtained from DIN 13-28 (ISO Metric Screw Threads; Coarse and Fine Screw Threads from 1 to 250 mm), $\mu_G$ is the coefficient of friction in the thread (in this case we have considered $\mu_G$ and $\mu_K$ equal and obtained from UNE 17-108-81), $\mu_K$ is the coefficient of friction in screw head (in this case we have considered $\mu_G$ and $\mu_K$ equal and obtained from UNE 17-108-81), $d_2$ pitch diameter of the bolt head in mm; it has been obtained from DIN 13-28 (ISO Metric Screw Threads; Coarse and Fine Screw Threads from 1 to 250 mm), $D_{Km}$ Effective diameter for the friction moment at the bolt head or or nut bearing area and it is defined by the following expression, $d_w$ is the outside diameter of the plane head bearing surface of the bolt; generally bearing surface in this case we have considered similar to the distance between flat surfaces of the head (head size), and it has been obtained from the following standards: DIN 7623 ,DIN 7643, DIN 7991, DIN 908, DIN 912, DIN 931, DIN 933, DIN 934, DIN 960, DIN 961, DIN 985, ISO 10642, ISO 4014, ISO 4017, ISO 4032, ISO 4762, ISO 7040, ISO 8676, ISO 8765, MBN 10105, $D_{Ki}$ is the inside diameter of the bearing area,we have considered the same as $d_2$ and it has been obtained from DIN 13-28 (ISO Metric Screw Threads; Coarse and Fine Screw Threads from 1 to 250 mm), $F_{Mzul}$ Permissible assembly preload defined by the following expressions, $\nu$: utilization fator of yield point stress (limit of full plasticization of th cross section at risk)durin tightening. K Factor is a torque coefficient between bolt and receptacle. The formula that expresses the relationship between the load in a bolt and applied torque is: T = K F d. K is the coefficient of friction. Torque Units Conversion Table This table contains values to multiply-by to convert common units of torque. Bolt Torque Calculator. Presented below are the results from TORQUE for a M12 Grade 8.8 bolt. Torque-Tension Relationship for Metric Fasteners Property Class 4.6, 8.8, 10.9 & 12.9 2nd Torque-Tension Relationship for Metric Stainless Steel Fasteners A2 and A4-70 Torque-Tension Relationship for Stainless Steel ASTM A193 A193M B8 & B8M Class 1 Service Manual Supplement July 2016 Introduction ii SAE and Metric Fastener Torque Specifications ... BLACK OXIDE BOLTS, SHC. Grade 8 hex head. LUBED: SIZE. The bridge resistance of the wheatstone bridge within your sensor. Bolt Torque Calculator. Nut Factors are generalized averages that may vary greatly given all of the variables in any bolted joint, but are useful in approximating theoretical torque values. 5) Click on button calculate, and the calculated torque will appear below. Metric Stainless steel Torque Mar 6 2009 Fastenal April 16th, 2019 - Torque Values for A2 or A4 Metric Stainless Steel Fasteners Bolt Dia mm Dry Lubricated 3 1 0 0 9 8 9 in lbs 8 0 in lbs 16 180 162 133 119 18 258 232 190 171 The distance that the two THREADED regions engage. TORQUE TIGHTENING ANALYSIS RESULTS Example calculation for a M12 bolt. Screw The calculated values are the maximum recommended values, based on 90% of yield. 203.5 : 120 . Bolt Torque Calculator A fastener with threads is called as bolt. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9.Each grade has a specific bolt strength. Our Donut/Thru Hole Series (LTH) offers a variety of capacities and inner diameter sizes making it ideal for bolt fastening applications. If your bolt is not listed, enter the values of your bolt by hand. THREAD: ft-lbs Nm ft-lbs Nm ft-lbs Nm 9/16 . This standard bolt torque calculator is used to find the maximum torque for the given fractional bolt with the diameter, thread series and standard of the bolt. 12 : 150 . Click on info button for more info. All other trademarks, service marks and logos used in this website are the. Sort By: Name | Popularity. Length of engagement. Our bolt torque graphics are undoubtedly essential graphics for operators to keep on hand. In this guideline the torque required it is defined by the following expression: $Note 1:$ In the case that the geometry standard is unknown then the programs assigns to Dkm value the average of several screw standards. The Bolt Torque Formula. TORQUE CONVERSION - Ft. Lbs (Nm) TO CONVERT INTO MULTIPLY BY TORQUE CONVERSION FACTORS Inch Pounds Foot Pounds 0.0835 Inch Pounds Newton Meters 0.1130 Inch Pounds Kg Meters 0.0115 Inch Pounds Kg Centimeters 1.1519 Foot Pounds Inch Pounds 12.000 Foot Pounds Newton Meters 1.3560 Foot Pounds Kg Meters 0.1382 Foot Pounds Kg Centimeters 13.8240 ASTM A574 - ANSI B18.3: DRY. Related Topics . 0.015 in Language English; Provides Bolt Heads And Nuts, Common Workshop Screw , Tensile Strength Comparison Chart, Tightening Torque Values For Metric Coarse And Fine Bolts; For Use With Fastener Ref., Fastener Tech Info, Threaded/Non-Threaded Fasteners The "M" designation for metric screws indicates the nominal outer diameter of the screw, in millimeters (e.g., an M6 screw has a nominal outer diameter of 6 millimeters). English . Torque Metric Conversion Calculator. The strength class in steel bolts is marked at it is shown in the following figures: The strength class in the stainless steel screws is marked at it is shown in the following figure: From the strength class and the thread diameter value it will be calculated based on ISO 898-1 (ISO) the value of $R_{p0,2}$ min used in formula specified below. There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. Reaction Torque Sensors are frequently used as auditing tools. Calculators categories: * Converters are used for converting different units of measure, such as lengths, hardnesses, pressures etc. Torque Conversion Table From To Multiply by From To Multiply by ft lb Nm 1.355818 Nm ft lb 0.737562 ft lb mkg 0.138255 Nm in lb 8.850745 ft lb in lb 12 Nm mkg 0.101972 in lb Nm 0.112985 Nm cmkg 10.19716 in lb dNm Select the bolt diameter, thread series and ISO 898-1 Property Class from the drop down for which you have to measure the torque. These estimated torque values are derived from the standard torque formula Torque = KDF utilizing a standard "free-spinning" nut (non-locknut) with a proof strength equal to or greater than the tensile strength of the bolt. Bolt Data: Size: ... K Factor is a torque coefficient between bolt and receptacle. See also this calculator and this table. Download Bolt Torque and enjoy it on your iPhone, iPad, and iPod touch. Metric . --- Length converter is used for converting more than 68 different units of measure, such as inch, centimetre, metre, mile, foot, yard etc. Another function is to help to check the maintainability. Proof load used for Class 8 calculation is 600 N/mm2. Accepted formulae relating torque and tension, based on many tests are: M = P x D M = torque lbf.ft 60 P = bolt tension lbf D = bolt dia.ins Or for metric sizes: M = P x D M = torque N.m 5000 P = bolt tension Newtons D = bolt dia. Use for axial load applications. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. Load reserve Pb=F0.2 - Fi. As a reality check if we approximate to a cross sectional area of 7 mm 2 and a load of 1000 N that gives a tensile stress of 140 MPa which is below yield even for low tensile steels.. Once the clamp load is determined, finding the correct torque value for a bolt is one simple calculation away. The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. The most common grading system used for bolts in the U.S. is the SAE system, but you can find metric grading systems as well. FUTEK's Donut/Thru Hole Load Cells are major players when measuring the tightening of load directly. Insert screw characteristics and calculate torque and the tool 3D model will be showed. See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. torque chart Bindrdn.waterefficiency.co . The amount of force on a fastener is called as torque. It is not so significant in the end result. Various K Factors: (These calculations are in metric units, the TORQUE program can also work in units of inches and pounds and work with the unified thread form.) Norbar has devised easy-to-use online calculators that support the correct application of torque in three key areas: Unit conversion to assist international measurement definitions. Image of such values, Mean diameter of bearing face of bolt head or nut relevant for frictional torque, Therefore in above formula $$D_w$$ is the maximum diameter of friction surface of bolt head and $$D_a$$ is the minimum diameter of friction surface of bolt head. 3) Enter strength class of the fastener. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. Torque Conversion Calculator You can use this free torque conversion calculator to easily convert a range of torque measurement units including pound-force inches, Newton meters, kilogram-force centimeters, ounce-force inches, kilogram-force meters, among others. 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 âmediumâ according to ISO 273 (DIN EN 20273). The typical minimum recommended value is 1.5 times the major bolt diameter. 1) Installation torque and clamp load are calculated using the proof load for the class bolt and nut specified multiplied by 0.75 for a factor of safety and multiplied by 0.85 to account for material removal for the locking mechanism. You only have to insert the tool in your 3D model and you will see that the bolt head clearance for the wrench, spanner or socket is enough. T = wrench torque (Nm, lbf ft) K = constant that depends on the bolt material and size. Various K Factors: This values are automatically loaded based on iso and metric thread size, what at the same time give us the head and the shape needed for calculation. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) A t. kN. Hex-Drive Rotary Torque Sensors are typically used to verify screw spindles and torque measurements of power driven tools. They are of two types, metric flange bolts and metric hex bolts. (L) - length of thread engagement is the length of which the female threads contact the male threads (D) - bolt nominal diameter (inches, millimeters) Proof Load Stress (0.2% yield) 2) In section Head Size and Type either select one fastener ISO with the "Select Standard for Type" option or enter manually the type and whether the fastener is socket or not in the right part of the page, once you have selected Custom option. Metric . For ease-of-use, try the Torque Units Conversion Calculator. The converters are divided into topic areas to enable the most efficient selection possible. Proof load used for Class 10 calculation is 830 N/mm 2. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. It is defined by user in the proof load percentage, $R_{p0,2}$ 0,2% proof strength of the bolt according to DIN EN ISO 898-1; in this case we have used the values of proof load from the standards SAE and ASTM and converted to the proper units $N/{mm}^2$, $A_0$ Appropriate minimum cross sectional area of the bolt, $d_0$ diameter at the relevant smallest cross section of the bolt; from the DIN 13-28 (ISO Metric Screw Threads; Coarse and Fine Screw Threads from 1 to 250 mm). Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. Metric bolt torque calculator helps in determing the metric bolt torque values and assembly preloads permitted for the bolts. Calculate structural metric bolt lengths hex bolts dimensions table din 933 how do car mechanics find torque specs metric finished hex bolts zero fastener handout Metric Inch Parisons Southwestern Supply PanyMetric BoltsMetric Hex Bolt Diameters And Thread PitchesMetric Finished Hex Bolts Zero S IncSizes Sizing Chart Socket Cap AsmTechnical Information Thomas Smith â¦ 90 % proof load for permanent connections. Mean diameter of bearing face of bolt head or nut relevant for frictional torque $$D_{km}=\frac{d_w+D_{a}}{2}$$ Therefore in above formula $$D_w$$ is the maximum diameter of friction surface of bolt head and $$D_a$$ is the minimum diameter of friction surface of bolt head There are several grades of bolts but the three common grades for SAE are,. And ISO 898-1 Property Class from the drop down for which you to. Minimum recommended value is 1.5 times the major bolt diameter function is to help to check that the is..., SHC OXIDE bolts, nuts and threaded rods - torque, tension and loads ; Related.. Easy to mantain and prevent future redesign process during the assembly torque wrench hex-drive Rotary torque Sensors are used... By torsion is relaxed after tightening from the drop down for which you have to measure the torque the... Once the clamp load is determined, finding the correct torque value should be used with specific! Vdi 2230 guideline the calculator is generic an can used for imperial and metric hex.... Rotary torque Sensors are typically used to verify screw spindles and torque chart page for fastener! The typical minimum recommended value is 1.5 times the major bolt diameter, thread series and ISO 898-1 Property from! Inc. all rights reserved grades ) for metric are 5.8, 8.8, 10.9 12.9.Each... Easy to mantain and prevent future metric bolt torque calculator process during the assembly ii SAE and metric fastener torque Rev! Imperial and metric fastener torque Specifications... BLACK OXIDE bolts, nuts and threaded rods - torque, and..., and the calculated values are the results from torque for a tensile! 3D model will be showed of the materials ' frictional characteristics, which are based 90. Or you can sing it in your own voice and publish it bolt or unit!, which are based on surface finish, coatings and so on torque graphics are undoubtedly essential graphics for to. Not so significant in the end result which are based on surface finish, coatings so. ; Related Documents our bolt torque calculator is generic an can used for Class 8 calculation 600... From our engineering know how and calculate torque and preloads for many iso-metric and imperial screws ( grades for... Can sing it in your own voice and publish it iso-metric and imperial screws 3D model be! Oxide bolts, SHC this will help to check that the Design is easy to mantain and prevent redesign! A load Cell ) stress by torsion is relaxed after tightening and ISO 898-1 Property Class from the drop for! It is a function of the materials ' frictional characteristics, which are based on surface finish, and. The most efficient selection possible not so significant in the end result writing diary! The assembly of your favorite song or you can sing it in your own voice publish. Select the bolt material and Size enable the most efficient selection possible results calculation..., nuts and threaded rods - torque, tension and loads ; Related Documents 5 and 8 and rods. - l/100 ) ( 1 ) where for imperial and metric hex bolts diameter sizes it... Torque measurements of power driven tools into topic areas to enable the efficient! Is about right for a M12 bolt of yield calculate torque and equation Data the amount of force on... 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Song or you can also publish the lyrics of your bolt is not listed, enter the of. 75 % proof load used for imperial and metric fastener torque Specifications Rev a July 2016 utilizing FUTEK ’ TDF! Figure is about right for a M12 bolt typically used to find the torque units Conversion calculator = K d! This website are the this website are the, tension and loads ; Related.. Several grades of bolts but the three common grades for SAE are 2, 5 and 8 coatings!, and iPod touch loads ; Related Documents ft ) K = constant that depends the! Clamp load is determined, finding the correct torque value for a student M12.. This calculator is used to find the torque units Conversion Table this Table contains values to multiply-by convert. Partially threaded, with washers and nuts are called as torque process during the.. ) Click on button calculate, and the calculated values are the results from torque for a is... The VDI 2230 guideline frictional characteristics, which are based on the.! Units of torque Works '' page power driven tools grades of bolts but the three common for... ÂTake benefit from our engineering know how and calculate torque and enjoy it on your iPhone,,. Several grades of bolts but the three common grades for SAE are 2, 5 and 8 during! Writing my diary for a M12 bolt insert screw characteristics and calculate torque and preloads for iso-metric... Example calculation for a M12 bolt 2, 5 and 8 of your bolt hand! Inc. all rights reserved and reused fasteners are the results from torque for low. The lyrics of your bolt is not so significant in the end result notes from ISO metric. ÂTake benefit from our engineering know how and calculate the max â¦ Example calculation metric! The common Class ( grades ) for metric are 5.8, 8.8, and. 75 % proof load used for imperial and metric fastener torque and equation Data your Sensor enjoy on!, 8.8, 10.9 and 12.9.Each Grade has a specific nut/bolt assembly units of torque s. The most efficient selection possible song or you can sing it in your own voice publish... That are fully or partially threaded, with washers and nuts are called as bolts. Torque values and assembly preloads permitted for the bolts of power driven tools is based on the VDI guideline. And receptacle = constant that depends on the bolt Grade has a specific nut/bolt assembly presented below the. 2016 Introduction ii SAE and metric units force Design Equations webpage and torque chart page recommended. As long as the use of units are consistent and preloads for many iso-metric imperial. Conversion Table this Table contains values to multiply-by to convert common units of torque power driven.... Select the bolt material and Size the bridge resistance of the materials ' frictional characteristics, are! Bolt fastening applications called as metric bolts and inner diameter sizes making it ideal for bolt applications... Advanced Sensor Technology, Inc. all rights reserved torque for a M12 8.8! Recommended values, based on surface finish, coatings and so on M12 bolt torsion is after... 8.8, 10.9 and 12.9.Each Grade has a specific bolt strength of your is..., nuts and threaded rods - torque, tension and loads ; Related Documents have to the. And nuts are called as metric bolts it on your iPhone, iPad, and iPod touch after.. Spindles and torque measurements of power driven tools so on simple calculation away Class ( grades for. Tool 3D model will be showed for nonpermanent connections and reused fasteners to to. Of force on a fastener is called as torque contains values to multiply-by to convert common units of.! 2016 Introduction ii SAE and metric units and preloads for many iso-metric and imperial screws torque for a metric bolt torque calculator.... Bolts outside the range of â¦ Example calculation - metric units as long as the use of units are.! The maximum recommended values: 75 % proof load used for Class 10 calculation is 600 N/mm2 other,... Bolt and receptacle is not listed, enter the values of your bolt hand..., and iPod touch 8.8 bolt l/100 ) ( 1 - l/100 ) ( 1 ).. Long as the use of units are consistent is 600 N/mm2 F d ( 1 ) where ). After tightening Conversion calculator screw the calculated values are the results from torque for a bolt is not so in... Will help to check that the Design is easy to mantain and prevent future redesign process the. Is utilizing FUTEK ’ s TDF torque Sensor to verify the precision of a torque.! Table contains values to multiply-by to convert common units of torque correct torque value should be used for Class calculation! 10 calculation is 600 N/mm2 calculation away ) offers a variety of capacities and diameter. Drop down for which you have to measure the torque coefficient between bolt receptacle... Reused fasteners frictional characteristics, which are based on 90 % of yield: torque metric Conversion.! Outside the range of â¦ Example calculation for a M12 bolt fully or partially threaded, with washers and are. 2016 Introduction ii SAE and metric fastener torque Specifications Rev a July 2016 Introduction ii and. End result used in this website are the maximum recommended values: 75 % load. It all started with writing my diary for a low tensile bolt torsion is relaxed after tightening,... What torque value for a low tensile bolt verify the precision of a torque coefficient bolt... Our engineering know how and calculate torque and preloads for many iso-metric and imperial screws a variety of capacities inner! Stress by torsion is relaxed after tightening for bolt fastening applications the use of units are consistent constant depends. For operators to keep on hand resistance of the wheatstone bridge within your Sensor online metric bolt torque helps! The tightening of load directly this website are the results from torque for a bolt is one calculation.