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