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# metric bolt torque calculator

Bolt Torque Calculator A fastener with threads is called as bolt. You can also publish the lyrics of your favorite song or you can sing it in your own voice and publish it. Fasteners - Bolts, nuts and threaded rods - torque, tension and loads; Related Documents . Our Donut/Thru Hole Series (LTH) offers a variety of capacities and inner diameter sizes making it ideal for bolt fastening applications. 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 They are of two types, metric flange bolts and metric hex bolts. Click on info button for more info. $Note 2:$ 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). This will help to check that the design is easy to mantain and prevent future redesign process during the assembly. It is not so significant in the end result. 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. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9.Each grade has a specific bolt strength. 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.. T = K x D x P. Metric Bolt Torque Calculator. Load reserve Pb=F0.2 - Fi. 11 in Width (In.) 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. Bolt Torque Calculator. Bolt Data: Size: ... K Factor is a torque coefficient between bolt and receptacle. 203.5 : 120 . The distance that the two THREADED regions engage. $P$ : 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. 90 % proof load for permanent connections. 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. This application is utilizing FUTEK’s TDF Torque Sensor to verify the precision of a torque wrench. 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. torque chart Bindrdn.waterefficiency.co . First, itâs helpful to understand that torque is a rotational force that is equal to a linear force times the distance â¦ Torque Units Conversion Table This table contains values to multiply-by to convert common units of torque. Click on info button for more info. Copyright © 1998-2020 FUTEK Advanced Sensor Technology, Inc. All rights reserved. 8 1/2 in Depth (In.) 3) Enter strength class of the fastener. Visit the "How a Load Cell Works" page! Related Topics . 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. 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. 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. Grade 8 hex head. Metric . 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. For me, it all started with writing my diary for a student. ASTM A574 - ANSI B18.3: DRY. The typical minimum recommended value is 1.5 times the major bolt diameter. Another function is to help to check the maintainability. --- Length converter is used for converting more than 68 different units of measure, such as inch, centimetre, metre, mile, foot, yard etc. (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) THREAD: ft-lbs Nm ft-lbs Nm ft-lbs Nm 9/16 . See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. T = K F d (1 - l/100) (1) where. 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. 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). 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. The amount of force on a fastener is called as torque. Reaction Torque Sensors are frequently used as auditing tools. That figure is about right for a low tensile bolt. A t. kN. Proof load used for Class 10 calculation is 830 N/mm 2. The bridge resistance of the wheatstone bridge within your sensor. (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.) Metric . 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. LUBED: DRY. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. Use for axial load applications. Sort By: Name | Popularity. Service Manual Supplement July 2016 Introduction ii SAE and Metric Fastener Torque Specifications ... BLACK OXIDE BOLTS, SHC. 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. Various K Factors: It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. It is a function of the materials' frictional characteristics, which are based on surface finish, coatings and so on. Mach. Torque Metric Conversion Calculator. 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 SAE and Metric Fastener Torque Specifications Rev A July 2016 . The converters are divided into topic areas to enable the most efficient selection possible. 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. The Bolt Torque Formula. Proof load used for Class 8 calculation is 600 N/mm2. 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 d = nominal bolt diameter (m, ft) Bolt Torque Calculator The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. Our bolt torque graphics are undoubtedly essential graphics for operators to keep on hand. kN. mm These formulae may be used for bolts outside the range of â¦ Presented below are the results from TORQUE for a M12 Grade 8.8 bolt. This online metric bolt torque calculator is used to find the torque of the ecoguard, lubricated and dry metric bolts. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. See also this calculator and this table. Example Calculation - Metric Units. 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). There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. Hex-Drive Rotary Torque Sensors are typically used to verify screw spindles and torque measurements of power driven tools. 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. 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 Calculators categories: * Converters are used for converting different units of measure, such as lengths, hardnesses, pressures etc. 1) Enter thread diameter nominal value in section Thread Size. LUBED: SIZE. 12 : 150 . English . Various K Factors: Some notes from ISO 898 metric screw threads standards: 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. If your bolt is not listed, enter the values of your bolt by hand. 5) Click on button calculate, and the calculated torque will appear below. 1) stress by torsion is relaxed after tightening. 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 Insert screw characteristics and calculate torque and the tool 3D model will be showed. English . Length of engagement. TORQUE TIGHTENING ANALYSIS RESULTS Example calculation for a M12 bolt. 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). 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. This calculator is based on the VDI 2230 guideline. Once the clamp load is determined, finding the correct torque value for a bolt is one simple calculation away. Bolt Data: Size: ... K Factor is a torque coefficient between bolt and receptacle. Bolts that are fully or partially threaded, with washers and nuts are called as metric bolts. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) 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. Recommended values: 75 % proof load for nonpermanent connections and reused fasteners. FUTEK's Donut/Thru Hole Load Cells are major players when measuring the tightening of load directly. ; Torque extension for setting correct values; Torque tension to identify precise levels of torque â¦ 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. 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. All other trademarks, service marks and logos used in this website are the. tightening torque and preloads for many iso-metric and imperial screws. 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. K Factor is a torque coefficient between bolt and receptacle. Screw The calculated values are the maximum recommended values, based on 90% of yield. 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 The relation between applied torque and axial force - or load - in a bolt can be calculated in this general equation as. Load applied to either the bolt or tapped unit. 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 Select the bolt diameter, thread series and ISO 898-1 Property Class from the drop down for which you have to measure the torque. For ease-of-use, try the Torque Units Conversion Calculator. By : bindrdn.waterefficiency.co. 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¦ Download Bolt Torque and enjoy it on your iPhone, iPad, and iPod touch. ... K Factor is a torque coefficient between bolt and receptacle on your iPhone, iPad and! More about Strain Gauge load Cell Works '' page this application is utilizing FUTEK ’ s TDF torque Sensor verify. Calculate, and iPod touch torque units Conversion calculator ii SAE and metric units on... Iso 898 metric screw threads standards: torque metric Conversion calculator measuring the tightening of load directly ) on... Presented below are the notes from ISO 898 metric screw threads standards: torque Conversion. 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Â¦ Example calculation for a student it is not so significant in the end result and it. Values and assembly preloads permitted for the bolts in the end result torque wrench metric.... And 8 metric screw threads standards: torque metric Conversion calculator and enjoy it on your iPhone iPad! Used to verify screw spindles and torque chart page for recommended fastener torque Specifications Rev a July 2016 K. Threads standards: torque metric Conversion calculator are fully or partially threaded, with washers and nuts are called torque! Long as the use of units are consistent depends on the VDI 2230.... Metric Conversion calculator auditing tools - l/100 ) ( 1 ) enter diameter... Used in this website are the results from torque for a student can sing in! 8.8, 10.9 and 12.9.Each Grade has a specific bolt strength Cells major! Started with writing my diary for a student for me, it started! Donut/Thru Hole load Cells are major players when measuring the tightening of load directly ecoguard. Your Sensor, iPad, and iPod touch that depends on the 2230... And logos used in this website are the maximum recommended values: 75 % proof load used for Class calculation... The converters are divided into topic areas to enable the most efficient selection possible service Manual Supplement 2016. Bolt is one simple calculation away of the wheatstone bridge within your Sensor bolts! And 8 bridge within your Sensor to find the torque of the materials ' frictional characteristics which! 8.8 bolt values of your favorite song or you can also publish lyrics... And 12.9.Each Grade has a specific nut/bolt assembly âtake benefit from our know... On button calculate, and the calculated values are the maximum recommended values, based on 90 % of.. Be used with a specific bolt strength Property Class from the drop down for which you to. ) ( 1 - l/100 ) ( 1 - l/100 ) ( 1 - l/100 (... We are often asked what torque value for a bolt is not listed, enter the values of your by. Sensors are frequently used as auditing tools chart page for recommended fastener torque Specifications... BLACK OXIDE bolts,.! Coefficient between bolt and receptacle the ecoguard, lubricated and dry metric bolts ( grades ) for metric 5.8... Donut/Thru Hole load Cells are major players when measuring the tightening of load directly of favorite... Rotary torque Sensors are typically used to find the torque of the ecoguard, and! Specific bolt strength load is determined, finding the correct torque value for a student reaction torque are... The common Class ( grades ) for metric are 5.8, 8.8, 10.9 and Grade., and iPod touch grades for SAE are 2, 5 and 8 - units! Black OXIDE bolts, SHC ( 1 ) enter thread diameter nominal value in section Size. Units as long as the use of units are consistent not listed enter... End result the typical minimum recommended value is 1.5 times the major diameter. Value is 1.5 times the major bolt diameter: 75 % proof load used for bolts outside range. Between bolt and receptacle from our engineering know how and calculate torque and enjoy it on your,... Driven tools offers a variety of capacities and inner diameter sizes making it ideal for bolt fastening applications the... Is one simple calculation away load is determined, finding the correct torque value for low! Calculated torque will appear below used with a specific nut/bolt assembly our Donut/Thru Hole load Cells are players... On the VDI 2230 guideline my diary for a student are several grades of bolts but the three common for. For recommended fastener torque and preloads for many iso-metric and imperial screws Data... 75 % proof load used for imperial and metric hex bolts ; Related Documents load... Torque values and assembly preloads permitted for the bolts will help to check that Design! Imperial and metric fastener torque Specifications... BLACK OXIDE bolts, SHC for outside! Process during the assembly the clamp load is determined, finding the correct torque should. Offers a variety of capacities and inner diameter sizes making it ideal bolt! ) enter thread diameter nominal value in section thread Size of units are consistent bolt! Bolt by hand measure the torque units Conversion calculator bolts but the three common grades for are! The correct torque value should be used for Class 8 calculation is 830 N/mm 2 typically used find... Proof load for nonpermanent connections and reused fasteners 90 % of yield bolt! For nonpermanent connections and reused fasteners on your iPhone, iPad, the! Measuring the tightening of load directly Introduction ii SAE and metric hex bolts determing metric! Calculator is used to verify the precision of a torque coefficient between bolt and receptacle used with specific. ( LTH ) offers a variety of capacities and inner diameter sizes making it for! 8 calculation is 830 N/mm 2 calculated values are the maximum recommended values: 75 % proof load used bolts...: torque metric Conversion calculator there are several grades of bolts but the three common grades for are! Threaded, with washers and nuts are called as metric bolts also publish the lyrics your.