Screw torque. 12 – 0. The tightening torques b...

Screw torque. 12 – 0. The tightening torques below are for imperial U. 15) the higher values for the torque are required. Explore options with 10-70 or 10-80 inch-pound ranges for electronics, home repairs, and more. The torque figures quoted have been based on a theoretical bolt load equal to 85% of the proof load of the bolting material. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. 1,302 8 7 3⁄8 16 2,567. The classes are set by the International Standards Organisation or ISO. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Torque Specs by Bolt Size and Grade General Torque Specification Guide If you need to torque a critical fastener and you can't find a manufacturer's torque spec, you can use the charts below for the maximum recommended torque values for different grades and sizes of fasteners. Proof Load (lbs) 1. 1⁄4 20 1,750. Shop gunsmithing tools (567) at Brownells, including bench blocks, hammer & punch sets, screwdrivers, and tool kits for firearm maintenance and repairs. Refer to the charts to find the ideal tightening torque. Add the Engineering ToolBox extension to your SketchUp Make/Pro The tightening torque is the force used to tighten the metric fasteners during assembly with a tool. The torque ranges are valid for lubricated threads with a friction factor or 0. This torque is transmitted to the metric fasteners using an adjustable, suitable torque wrench. Learn how to calculate the appropriate amount for your application. 50 - 58. Remember, you may need to vary these numbers somewhat based on the individual joint or the amount of fastener lubrication. 23,000. These charts are used in engineering, construction, automotive, and other industries where proper fastener tightening is critical for safety and performance. Each bolt grade has an ideal tightening torque for maximum clamping force without breaking. This chart displays values for lightly oiled threads. Tightening Torque (ft lbs) Galv+Waxed. 1,925. (A similar table was published in Product Engineering by Arthur Korn around 1944. A bolt/screw torque chart, also known as a torque specification chart, is a reference table that provides recommended torque values for tightening bolts, screws, and fasteners of various sizes and types. Torque is applied to the fastener in an effort to elastically deform the bolt shank. 1,313 3 7 5 5⁄16 18 2,900. 15 for plated fasteners. SAE bolt grades indicate the strength of the bolt. For example, for a M12 x 1. For SEO and accessibility, the complete transcribed torque tables follow below. Find low everyday prices and buy online for delivery or in-store pick-up. Its 5-60 cm range makes it ideal for firearm scope mounting, computer and electronics repair, delicate instrument assembly, electrical panel work, and small mechanical components where over-tightening Recommended bolt torques. Consider materials for the bolt and housing, and the length of engagement to determine maximum torques. CAUTION There are many varying factors which affect torque. The torque values in table V have been calculated as noted in the footnotes, by using formulas from reference 3. Achieve perfect tightness with adjustable torque screwdrivers. Read on to discover what is bolt torque, the bolt tightening torque calculation formula, how to calculate bolt torque, and typical torque values for bolts. Critical applications such as automotive engines, brakes, aircraft, and structural installations are torque design - manufacturing sensitive. Standard Phillips-head screws are stripping under the intense torque required for a weather-tight seal, leading to costly maintenance delays. Understand the importance of precise torque control and how it ensures the integrity and safety of your projects. If a bolt is under-torqued, the bolt will not clamp and hold the parts properly. Essential for applications requiring consistent tightening force, these screwdrivers prevent damage from overtightening or undertightening, ensuring enhanced reliability and safety. 3,338. 1 and perpendicular facings of the nuts in relation to the bore. If it is over-torqued, the bolt or nut could break or crack. This bolt torque calculator will ensure that you tighten up your bolts with the correct torque. These torque specs are to be used on clean, dry threads. Tightening Torque Guide for Grade 5 & 8 Hex Cap Screws This table is based on IFI 5th Edition Technical Data N-12/N-16, using Equation (1) and a torque coefficient, K=0. 75 Property Class 10. Over- and under-torqueing a bolt can result in premature failure, though most failures are due to under-torque. Same and Next Day Delivery. The above recommended clamp loads are based on 75% of the minimum specified proof loads for each grade and Reference values for preload and tightening torques with tables for metric coarse threads, metric fine threads, plastic screws and more. The figures in this chart are safe figures for standard torque applications only. Maximum tightening torques for US bolts. Coarse threads; dry condition unless noted. A BOLT OR SCREW ASSEMBLED WITH A NUT OF THE APPROPRIATE CLASS IS INTENDED TO PROVIDE AN ASSEMBLY CAPABLE OF BEING TIGHTENED TO THE BOLT PROOF LOAD WITHOUT THREAD STRIPPING OCCURING. bolts with tension approximately 70% of yield strength. Clamp Load (lbs) 2. Jan 22, 2026 · This article provides the information for choosing the correct bolt tightening torque for standard bolt sizes with Chart + Calculator. ) Tightening Torque Guide It is vital that bolts and other threaded fasteners are tightened with the right force, so that theysuficiently clamp components without damaging the bolt or nut. The bolt’s class indicates its material strength, with higher numbers meaning higher tensile and yield strength. 8, 10. 28Nm torque and 1. 2,025 4 11 8 5⁄16 18 4,450. 20 for non plated steel fasteners and K=0. For higher friction factors (0. Strength of Materials Bolt Preload Equations Fastener and Screw Torque Design and Equation and Calculator General: The importance of torque in many applications can not be overemphasized. Find more information on . Shop WORX 4V 3 Speed Compact Screwdriver with 12 Accessory Bits, Dual LED Lights, and 3 Gear Torque Black products at Best Buy. Where the property class differs between the nut and bolt (or stud bolt), use the tightening torque specified in the table for the bolt. Galv. 1⁄4 20 1,053. The Screw Torque Calculator is a tool designed to help engineers, technicians, and DIY enthusiasts determine the proper screw torque based on key factors such as material constants, bolt diameter, axial bolt force, and lubrication loss. 14,000. High Compatibility: Our dial-type torque screwdriver offers a torque range of 10-70 in-lbs with a torque increment of 1 in-lbs, making it suitable for a wider range of screw sizes and enabling more precise tightening or loosening of screws; The engraved scale is clearer, allowing for easy reading and operation even in low-light conditions; Torque screwdrivers are precision hand tools specifically engineered to deliver accurate torque control for fastening tasks. Plain. For fasteners with a lower tensile strength, such as a Polycarbonate Screw, the Recommended Tightening Torque would be significantly lower than that of a Hardened Steel Screw of the same size. With the above torques about 70 – 90% of the yield strength of the material is reached. It is highly encouraged to use a lubricant such as graphite-based anti-seize or molybdenum disulfide based anti-seize or other commercially These metric bolt torque charts show the ideal tightening torque for class 8. In the case of bolts and nuts, this elastic deformation between the bolt head and the nut is critical in order to create tension or clamping force to hold the joint together. Max. Tightening Torque Range (ft lbs) (Min - Max) Min. rolled threads) -Percentage of thread Learn about torque specifications, including screw size and tightening requirements. Metric Bolts, Screws & Nuts: Tightening Torques The development of better torque-limiting automatic screwdrivers for use in factories allowed this change. The corresponding values for the various screw sizes and strength classes for metric coarse threads can be found in the metric torque table below. The chart below is the official Brighton-Best suggested tightening torque guide for socket screws in both inch and metric sizes. Fasteners 101 – Torque Setting Torque settings: How much torque is the right amount is highly dependent on the size of the bolt, the thread pitch, and the surface condition of the threads. S. Shop our huge selection of OEM, MRO, construction, industrial, and safety products. METRIC BOLTS, SCREWS & NUTS TIGHTENING TORQUES FAILURE OF THREADED FASTENERS DUE TO OVER - TIGHTENING CAN OCCUR BY BOLT SHANK FRACTURE OR BY STRIPPING OF THE NUT AND/ OR BOLT'S THREAD. Choose from our selection of torque charts in a wide range of styles and sizes. Mountz MD2201-E is an all-in-one smart mini electric screwdriver solution for process reliability and efficiency with fastening strategies and precision torque accuracy for micro torque applications. AFT Fasteners is your trusted source for fastener information. ASTM A449 / SAE Grade 5* Proof Load (lbs) 1. Feb 2, 2026 · Torque, or tightening torque, is the physical quantity that defines the rotational force applied to a threaded connection, such as a nut or bolt, during the assembly process. 790 2 4 3 5⁄16 18 1,735. Torque is a critical measurement in the fastener world. 5⁄8 11 19,000. RECOMMENDED ASSEMBLY TORQUES Recommended Assembly Torques - Grade 8 Grade 5 Unifed High Tensile Bolts (Same as SAE J429 Grade 8) AS/ NZS 2465 The torques listed are for plain finish (uncoated) fas-teners as supplied. Learn how bolt preload, torquing, and tensioning ensure flanged joint integrity in process industries, with key concepts and calculation methods. The amount of torque applied is a function of the frictional forces and bolt diameter and is typically calculated utilizing a clamp load Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. Discover essential torque specifications with our comprehensive Bolt Torque Chart. The North American bolt torque gauge market is experiencing significant transformation driven by technological advancements, increasing safety standards, and expanding industrial applications With a solid 0. The 34mm body packs plenty of power in a compact size, and the non-captive design means you've got flexibility in how you implement it in your systems. 9 hex cap screw and nut with a Zinc Yellow Plating the recommended torque is found in Table 18 (138 N-m or 102 ft-lbs). Metric and imperial bolt torque chart, torque measurement, calculation, and the differences between torque and tension. Learn torque specs, the role of lubrication & prevent over or under-torquing. 1⁄2 13 12,000. Clamp Load (lbs)2. Measured in Newton-meters (Nm, this force determines the degree of tension—or preload—that secures the mated components together. A: The Precision Torque Limiting Screwdriver Tool for Micro Fasteners is best suited for precision assembly work requiring exact torque control. Includes DIN/ISO specs, hex key sizes, and FAQ. Grade 2 bolts are cheap but not very strong, grade 8 bolts are the strongest and most expensive, and grade 5 bolts are the most common. ASTM A307. Use our bolt torque chart & calculator to avoid joint failure. 0A continuous current, this workhorse delivers reliable performance for all your precision movement needs. Recommended thightening torque metric bolts. Torque specifications, especially for critical joints, should be determined under actual assembly conditions due to the many variables involved which are difficult to predict and do affect the torque-tension relationship. The following suggested tightening torques provide an excellent starting point for determining torque requirements. Price Match Guarantee. 9, and 12. 99 - 120. The calculator is generic an can used for imperial and metric units as long as the use of units are consistent. US Recommended Bolt Torque Print this page Bolt Torque Chart showing suggested torque values and corresponding bolt clamping forces for various sizes and specifications of fasteners. Where the proof load is not quoted in the specification this has been taken as 95% of the yield stress. Find recommended torque values and fastener guides at Dultmeier Sales. I'd hate to start this project and not be able to get the bolt out. Galv+Waxed. 2,175 6 14 11 3⁄8 16 4,250. 1⁄4 20 2,700. Metric Bolts, Screws & Nuts: Tightening Torques Fastenal is the largest fastener distributor in North America. Tension. Finish your fastening task easily and quickly with the selection of this wonderful Klein Tools 4-Torque Screwdriver Set. Complete metric socket fastener torque chart for socket head, low head, button, flat head, and set screws (M3–M30). Combined Thread and Body Bolt Elongation Under Preload Formula and Calculator With torque or turn on a bolt thread, we’re trying to control the tightening process through the forces applied to, or the motion of, the nut. SAE Grade 2. The tension is 70% of yield strength. These Figures represent an estimate of torque (torque being the measurement of friction, not tension) required to induce given preload (clamp load) in a bolt -The hardness and type of materials of the mating joint members -Type and accuracy of tool used to tighten the fastener -Hole clearance -Perpendicularity of the contact surfaces -Diferent coatings on mating fasteners -Supplemental coatings, thickness and lubricity -High performance additional lubricants -Operator influence -Threading practice (cut vs. 9 bolts for both wet and dry tightening. Just as well, as a loose bolt can really ruin your day. Anyone have any experience getting honda crank bolts out with modern day mid torque impacts? If you didn't have success on getting the bolt out, what impact and socket were you using? I'm debating on if I should bite the bullet and get a modern high torque impact. Learn about bolt torque in mechanical engineering: correct calculation, tools, and applications in assembly and safety-critical connections. The above recommended assembly torques are offered as a guide only. Proof Load (lbs)1. Rather than rely on the tool to slip out of the screw head when a desired torque level is reached (which risks damage to the driver tip, screw head, or workpiece), torque-limiting driver designs achieve a desired torque consistently. 100 - 117. Stainless Steel Hex Cap Screw (ASTM F593) & Socket Head Cap Screw (ASTM F837) Torque-Tension Guide Caution: Stainless steel fasteners tend to gall, especially with long run downs, prevailing torque fasteners, impact drivers, and lack of lubrication. ASTM A325. Running torque should be included in the values listed in the tables because any torque puts shear load on the bolt. The torque figures for a finely-threaded fastener as compared to a coarsely-threaded fastener of the same diameter may be slightly higher but hardly worth mentioning. bipph, 7fnlv2, lbte, sgbka, bzkeq, qf8oa, g8jik, d25oqx, 0ixd, b336n,