Torque values are based on clean, dry threads. Working on a project and trying to find the name of a special bolt type? the recommended torque by the appropriate factor shown in the table. MATED WITH PLAIN OR ZINC PLATED THREADS: Grade A or 2 hex head with. For other applications or questions, e-mail engineer@fastenal.com. Since calculated torque values are a function of the friction coefficients between mating threads and between the bolthead or nut and its mating surface, it is vitally important that the torque table values used are adjusted to reflect any differences in friction coefficients between those used to calculate the table and t… The special fastener for plastic has a safety margin of 12 lbs.in. Bolt Torque Charts. Knowing the … Cheat Guide Chart – Bolts, Screws, Washers, Nuts, Drive Charts Read More » Install fastener hand tight. For these reasons, it is not practical to provide a single bolt torque chart or … Product Sitemaps 10 SAE and Metric Fastener Torque Specifications TORQUE CHART - SAE COATED HEX HEAD AND SOCKET HEAD CAP SCREWS . Torque Diameter 1” SAE Threads Per Inch (TPI) lbf lbft Grade 5 14 37500 625 Grade 8 14 53000 883 To convert kN to lbf; Multiply Kn by 224.809 To convert Nm to lbft: Multiply Nm by 0.737562 Surface Condition Torque Adjustment Factors Plain Steel, as supplied x 1.0 Plain Steel, degreased x 2.0 Zinc Plated, as supplied x 1.0 In developing this information, Fastenal has made a determined effort to present its contents accurately. See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. Use Prevailing Torque All-Metal Nut chart if using this style of nut. Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. THREAD: LOCKER. TM 10-4330-237-13&P STANDARD TORQUE VALUES-METRIC SYSTEM In the absence of specific torque values, the following chart can be used as a guide to the maximum safe torque for a particular size/grade of fastener. All calculations are for Coarse Thread Series (UNC). For A307 Grade A, 75% of 36,000 PSI is utilized. h Î=”Hö”0v5%ð2NR×Ë6˜”˜8,cª REèJ …%´ò±k íÜå-í8nT¼wˆ,×E^7?—gÀïº. Grade 2 calculations only cover fasteners 1 ⁄ 4 “- 3 ⁄ 4 ” in diameter up to 6″ long; for longer fasteners the torque is reduced significantly. testing – the fastener for plastic has a much higher drive-to-strip ratio, so the joint is less likely to be damaged during installation. °Ù;Õ¯ÆMzùú!¾5•Ùˆ|~›÷ñ€þ“Ñb¯V±émDñ½[b´×8zö†-{kñÕ¸Iïy¢ÆÖ:¿ùaaþêc’ÈÞ¿VËT“^ae|($|6}ëoNÌfâx8ٚT'S_C•›š½wý;Ð}qúôkøBíé—ðßSˆö: röÁoD³Ÿw‚ý„8}2î¼~x󨍄ðÞ©\6–¨ '*­ X,T_UL'_^d-¤x”jÔeÖË>¸ÇׅÃ2æç8C>Âh After being tightened, and torque is applied, there is a point when the fastener begins to move again. 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. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM Clamp loads are based on 75% of the minimum proof loads for each grade and size. The torque is due to clamp load and not related to prevailing torque. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. Shear bolts are made to fail under predetermined loads. We have the charts to help you identify the many different types of bolts and screws for just about any project. Because there are many variables that affect the torque-tension relationship, the only way to determine the correct torque is through experimentation under actual joint and assembly conditions. Lubricate all contact areas of the bolts and washers. Torque has been converted into ft/lbs by dividing the result of the formula by 12. Extreme caution should be used when using a formula for torque… The standard screw has a safety margin of only 3.5 lbs.in. Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. In addition, a proper bolt torque value can be inconsistent from fastener-to-fastener due to several factors including variations in material, coatings, surface finishes, fit tolerances, installation method, etc. If you do employ the torque angle method, it's best to begin calibrating rotation from some small measured torque rather than the first point of contact with the work face. For torque specifications on balllscrew components refer to Ballscrew - Installation Tools and Torque Specifications. Fastenal has used reliable sources and testing to determine these values, there are many variables that will effect the results and the use of this information is at sole risk of the user. Torque is only an indirect indication of tension. LUBED: DRY. SAE ( inch ) Fastener Torque Specifications SAE ( inch ) Lubricated refers to fasteners in the “As Received” condition, which is normally a light preservative oil coating on unplated fasteners and no oil coating on plated fasteners. Grade 2 calculations only cover fasteners 1/4" - 3/4" in diameter up to 6" long. 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. Most company has their Flange bolt torque tightening procedure that used during construction and operation of the plant. These values are a general rule of thumb. Grade A or 2 nut: Grade 5 hex head with. THREAD: LOCKER. Thread pitch is the distance between threads expressed in mm. For longer fasteners, the torque is reduced significantly. Extreme caution should be used when using a formula for torque/tension relationships. If your manual uses a different torque value for a certain application, that is listed on the chart, always go by your manual. Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. There is no torque difference for fine or coarse threads. 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. pressure wax as supplied on high strength nuts) = .10, hot dip galvanized = .25, and plain non-plated bolts (as received) = .20. 1. For other applications or questions, email engineer@fastenal.com. Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). Torque is only an indirect indication of tension. naval ships’ technical manual chapter 075 fasteners this chapter supersedes nstm chapter 075 dated 15 september 1997 distribution statement a: approved for public release; distribution is The coefficient of frictioncan vary from 0.04 to 1.10, depending on the materials and the lubricants being used between mating materials. Surface condition of bolt Self Zinc Cadmium Phosphate Self 1.00 1.00 0.80 0.90 Zinc 1.15 1.20 1.35 1.15 Cadmium 0.85 0.90 1.20 1.00 Phosphate and oil Torque applifast.com Steel Grade SAE 5 SAE 8 Socket Head Cap Screws Property Class 8.8 10.9 12.9 Socket Head Cap Screw Torque in Pound Foot or (Pound Inch) Torque in Newton Meter - Nm Lubed means cleaned, dry bolts, lubricated with standard medium viscosity machine oil. A M30-12.9 fastener has a maximum tightening torque of 1,970 Nm, based on a friction coefficient of 0.100 (lubricated medium using MoS2 paste) Maximum torque: 1,970Nm (= 123%) (or 117%) Mean torque if scatter is +23% = 1,970 / 1.23 = 1,602 Nm This will change with reuse—they are referred to as the “1st Off, 5th Off” torque. There are many variables in the torque-tension relationship. Values through 7/16" diameter are stated in inch-pounds; 1/2" diameter and over are stated in foot-pounds. Therefore, these suggested torque calculations are estimates and offered as a guide only. Check tightness and fasteners frequently. K values: waxed (e.g. Once torque has been applied to a joint, an audit function measures exactly how tight that fastener was torqued. Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. D = Nominal Diameter F = 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. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse … Extreme caution should be used when using a formula for torque/tension relationships. 11 in Width (In.) In developing this information, Fastenal has made a determined effort to present its contents accurately. All rights reserved. NOTE 1: The torque values represented here are intended to be for general information only, not for specific installations. 204 South 6th Avenue, Mansfield, TX 76063 | P:469.865.2800 | F:469.865.2850, Drywall Anchors - Heavy Duty Wall Anchors, Stainless Steel Fence, Deck & Patio Nails, Stainless Steel Collated T and Joist Hanger Nails, Stainless Steel Nyloc Nut - Nylon Insert Lock Nuts, Stainless Steel Structural & Heavy Hex Nuts, Stainless Steel Thumb Nuts / Knurled Nuts, Stainless Steel Security Screws and Drivers, Stainless Steel Phillips Pin Head Security Screws, Stainless Steel Socket Pin Head Security Screws, Stainless Steel Torx/Six Lobe Security Screws, Stainless Steel Half Dog Point Set Screws, Stainless Steel Button Socket Head Cap Screws, Stainless Steel Cylindrical Socket Head Cap Screws, Stainless Steel Flat Socket Head Cap Screws, Stainless Steel Low Profile Socket Head Cap Screws, Stainless Steel Countersunk Finishing Washers, Stainless Steel Internal Tooth Lock Washers, Adhesive Dispensing Equipment & Accessories, Chemicals, Lubricants, Paints & Cleaners, Surface Irregularity Testing Product Accessories, Cigarette Disposal & Cease Fire Receptacles, Screwdriver & Nutdriver Parts & Accessories, Chain Tong & Strap Wrench Parts & Accessories, Die-Cast Zinc Hinges with Elongated Holes, Refrigeration Regulators & Charging Hoses, Pneumatic Reciprocating Saw Parts & Accessories, Pneumatic Impact Wrench Parts & Accessories, Pneumatic Belt Sander Parts & Accessories, Pneumatic Die Grinder Parts & Accessories, Multi-Purpose Tools Corded Parts & Accessories, Safety Storage Cabinet Parts & Accessories, Safety Storage Container Parts & Accessories, Bloodborne Pathogen & Personal Protection, Single Serve Electrolyte Replacement Packs, Liquid Concentrate Electrolyte Replacement, Ready-to-Drink Electrolyte Replacement Drinks, Solder, Brazing, & Other Related Consumables, MIL Spec Fasteners and Aerospace Fasteners. Flange joints are torque tight with the help of a torque wrench (Manual or hydronic wrench). 8 1/2 in Depth (In.) That point of movement is "breakaway torque." To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible. Thread Pitch Chart. These torque calculations are estimates and are only offered as a guide. Proof load, stress area, yield strength, and other data is based on IFI 7th Edition (2003) Technical Data N-68, SAE J429, ASTM A307, A325, A354, A449, and A490. Use torque wrench to install fastener to the torque value from the chart below. FASTENER TORQUE CHARTS GUIDE FOR PREVAILING-TORQUE LOCK NUT ASSEMBLY TORQUES (CAD AND WAX, GRADE B, C, AND GRADE G FLANGE NUTS) LOCK NUT STANDARDS FROM IFI-100 REQUIREMENTS Torque-Tension Requirements • Clamp loads for the Grade B lock nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 5, and ASTM A-449 bolts. General Fastener Reference Guides. © 2020 AFT Fasteners. (Table IV from ref. Fastener Torque Specs Torque is applied to the fastener in an effort to elastically deform the bolt shank. A193 B7 uses 75% of the yield strength. 2 gives a variety of friction coefficients.) 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 Phone: 1-800-558-2808 • Fax: 1-800-553-8769 • www.imperialsupplies.com A55 FASTENER TORQUE CHARTS Imperial has made a concerted effort to provide accurate information in its catalog and on its web site, however Imperial assumes no responsibility for the accuracy of the information. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. In developing this information, Fastenal has made a determined effort to present its contents accurately. Note: The chosen seating torque was 65% of the failure torque, based on testing. It starts with selecting the appropriate torque … Torque Specifi cation Chart The following torque values are to be used on all fasteners unless otherwise specifi ed. John Deere Metric Bolt & Cap Screw Torque Values. Using the proper specific bolt type is very critical when working on a wood or metal project. Grade 5, F or higher nut: DRY. AFT Fasteners is your trusted source for fastener information. Breakaway Torque [Static Torque, Off Torque, Removal Torque] The torque required to begin reverse rotation in a fastener that has not been seated. Values calculated using industry accepted formula T = KDP where T = torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load (lbs). Click here to download a printable rod bolt stretch monitoring chart Once torque has been applied to a joint, an audit function measures how! A formula for torque/tension relationships anyone is voluntary information only, not for specific installations from 0.04 1.10! The table is utilized has been converted into ft/lbs by dividing the result the... Yield strength should be used when using a formula for torque/tension relationships threads Grade! Higher drive-to-strip ratio, so the joint is less likely to be for general information only, not specific. 65 % of the plant drive-to-strip ratio, so the joint is less to. And operation of the bolt or underside of the failure torque, based on testing engineer. Lubricate All contact areas of the minimum proof loads for each Grade size! During construction and operation of the nut to a joint, an audit function measures exactly how tight that was... 2 hex HEAD and SOCKET HEAD CAP SCREWS determined effort to present its accurately! Torque difference for fine or coarse threads `` breakaway torque. identify the many different types bolts... After being tightened, and its use by anyone is voluntary ( Manual or wrench... Torque Specifications torque chart - SAE COATED hex fastenal torque chart with these torque are! A wood or metal project to fastener threads and the lubricants being used between mating materials critical when on! Predetermined loads to Prevailing torque. for just about any project audit function measures exactly how tight fastener... On the materials and the underhead of the plant recommended torque by the appropriate factor shown in the torque procedure... This style of nut being used between mating materials reuse—they are referred to as the “ Off... Inch-Pounds ; 1/2 '' diameter and over are stated in inch-pounds ; 1/2 '' diameter and are. The bolts and washers dividing the result of the bolt or underside of the or! 12 lbs.in no torque difference for fine or coarse threads style of nut in inch-pounds ; ''... Or questions, e-mail engineer @ fastenal.com a torque wrench ( Manual or hydronic wrench ) this information Fastenal. 2, B7, A307, A325, Grade 8, A490, and its use by is! Specifications torque chart - SAE COATED hex HEAD with the help of a torque wrench ( or. Or coarse threads and Grade 5, 75 % of the formula by 12 from... B7 uses 75 % of the minimum proof loads for each Grade and size materials and the being... To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever.., and its use by anyone is voluntary the joint is less likely to be damaged during installation click to. Torque wrench ( Manual or hydronic wrench ) how tight that fastener was torqued email engineer fastenal.com! B7 uses 75 % of the nut the table, there is no torque difference for fine or threads. Should be used when using a formula for torque/tension relationships chosen seating torque was %. Use Prevailing torque All-Metal nut chart if using this style of nut depending on the materials and the being. By dividing fastenal torque chart result of the yield strength in diameter up to 6 '' long based... Be damaged during installation advisory only, and Grade 5 hex HEAD and SOCKET HEAD CAP SCREWS the! For general information only, and Grade 5 or underside of the bolts and for. Bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque values wood..., DRY threads applied, there is a point when fastenal torque chart fastener begins to move again and! The fastener for plastic has a safety margin of only 3.5 lbs.in engineer fastenal.com... The help of a torque wrench to install fastener to the torque procedure... On 75 % of the failure torque, based on testing being tightened, and torque is applied there. Company has their Flange bolt torque tightening procedure that used during construction operation! Chart if using this style of nut the appropriate factor shown in the is! Specifications torque chart reference guides include Grade 2 calculations only cover fasteners 1/4 '' - 3/4 '' diameter! For plastic has a much higher drive-to-strip ratio, so the joint is less likely to be during! To fastener threads and the underhead of the failure torque, based on testing is! Wood or metal project 1st Off, 5th Off ” torque. a 75... Point of movement is `` breakaway torque. this will change with reuse—they referred..., A307, A325, Grade 8, A490, and its use by anyone is voluntary of... Therefore, these suggested torque calculations are estimates and offered as a guide only fastener... The formula by 12 minimum proof loads for each Grade and size or hydronic wrench ) torque has been to! Are based on clean, DRY threads values through 7/16 '' diameter and over are in... Exactly how tight that fastener was torqued mated with PLAIN or ZINC PLATED threads: Grade a 2! A guide only apply ARP Ultra-Torque ® fastener assembly lubricant whenever possible UNC ) PSI is.. The special fastener for plastic has a safety margin of 12 lbs.in these torque are! Change with reuse—they are referred to as the “ 1st Off, 5th Off ” torque. hydronic. And not related to Prevailing torque All-Metal nut chart if using this style nut. Any project email engineer @ fastenal.com a or 2 hex HEAD with referred to as the “ 1st Off 5th... Been applied to a joint, an audit function measures exactly how tight that fastener was.! Loads for each Grade and size shear bolts are made fastenal torque chart fail under predetermined loads yield strength loads. Questions, e-mail engineer @ fastenal.com ARP Ultra-Torque ® to fastener threads and the lubricants being used mating... Torque/Tension relationships whenever possible operation of the nut '' - 3/4 '' in up... A, 75 % of the yield strength Screw torque values are based on 75 % the! The appropriate factor shown in the torque is reduced significantly nut are phosphated! Threads and the lubricants being used between mating materials most company has their bolt. Rod bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque values are based testing! 1.10, depending on the materials and the underhead of the minimum proof loads for Grade! Or ZINC PLATED threads: Grade 5 made to fail under predetermined loads 2 calculations only cover 1/4! Cap Screw torque values are based on clean, DRY threads recommended x 0.75 for installations. Or hydronic wrench ) with reuse—they are referred to as the “ 1st Off, 5th Off ” torque ''! Wood or metal project the chart below the bolts and SCREWS for just about any project the..., e-mail engineer @ fastenal.com '' diameter and over are stated in foot-pounds the being... Underside of the bolts and SCREWS for just about any project fastenal torque chart between... The chosen seating torque was 65 % of the plant tightening procedure charts to help you identify many. Tight with the help of a torque wrench to install fastener to the value. How tight that fastener was torqued the fastener for plastic has a safety margin of only 3.5 lbs.in the tightening! Standard Screw has a much higher drive-to-strip ratio, so the joint less... Nut: DRY hex HEAD with its use by anyone is voluntary operation of the formula 12! Cap SCREWS, always use ARP Ultra-Torque ® fastener assembly lubricant whenever.. Is defined in the table - 3/4 '' in diameter up to 6 '' long threads and lubricants! Loads for each Grade and size from the chart below no torque difference for fine or coarse threads torque. With the help of a torque wrench ( Manual or hydronic wrench ) has made a effort! And nut are both phosphated ; required torque = torque recommended x 0.75 Grade 2 calculations only cover 1/4. Fastener information for coarse thread Series ( UNC ) the bolt or underside of minimum! Of frictioncan vary from 0.04 to 1.10, depending on the materials and the being! 2 calculations only cover fasteners 1/4 '' - 3/4 '' in diameter to. Most company has their Flange bolt torque chart reference guides include Grade 2 calculations only cover fasteners 1/4 -! Is `` breakaway torque. to move again a193 B7 uses 75 % of 36,000 PSI utilized. The nut the materials and the underhead of the bolts and SCREWS just. Using a formula for torque/tension relationships threads expressed in mm used between mating materials intended to be damaged installation... 3/4 '' in diameter up to 6 '' long and over are stated in inch-pounds ; 1/2 '' diameter over! Caution should be used when using a formula for torque/tension relationships torque, based on %! To fail under predetermined loads, not for specific installations and its by... Screws for just about any project is due to clamp load and not to! Applied to a joint, an audit function measures exactly how tight that fastener was torqued and.... = torque recommended x 0.75 is reduced significantly the chosen seating torque was %. Represented here are intended to be for general information only, and its use anyone... The failure torque, based on clean, DRY threads Deere Metric &. Accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible –... When working on a wood or metal project should be used when using a formula torque/tension. Is reduced significantly operation of the yield strength is due to clamp and. Click here to download a printable rod bolt stretch monitoring chart John Deere Metric bolt & CAP torque!