The standard screw has a safety margin of only 3.5 lbs.in. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). Grade 2 calculations only cover fasteners 1/4" - 3/4" in diameter up to 6" long. 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. Torque has been converted into ft/lbs by dividing the result of the formula by 12. testing – the fastener for plastic has a much higher drive-to-strip ratio, so the joint is less likely to be damaged during installation. 1. For A307 Grade A, 75% of 36,000 PSI is utilized. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Breakaway Torque [Static Torque, Off Torque, Removal Torque] The torque required to begin reverse rotation in a fastener that has not been seated. Grade 5, F or higher nut: DRY. Therefore, these suggested torque calculations are estimates and offered as a guide only. Note: The chosen seating torque was 65% of the failure torque, based on testing. That point of movement is "breakaway torque." If your manual uses a different torque value for a certain application, that is listed on the chart, always go by your manual. 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. Using the proper specific bolt type is very critical when working on a wood or metal project. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. 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. Extreme caution should be used when using a formula for torque/tension relationships. Thread pitch is the distance between threads expressed in mm. After being tightened, and torque is applied, there is a point when the fastener begins to move again. Use Prevailing Torque All-Metal Nut chart if using this style of nut. 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 © 2020 AFT Fasteners. Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. 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. Flange joints are torque tight with the help of a torque wrench (Manual or hydronic wrench). The torque is due to clamp load and not related to prevailing torque. Knowing the … Cheat Guide Chart – Bolts, Screws, Washers, Nuts, Drive Charts Read More » Grade A or 2 nut: Grade 5 hex head with. (Table IV from ref. Shear bolts are made to fail under predetermined loads. 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. °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 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. THREAD: LOCKER. Values calculated using industry accepted formula T = KDP where T = torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load (lbs). For other applications or questions, e-mail engineer@fastenal.com. Working on a project and trying to find the name of a special bolt type? See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. The special fastener for plastic has a safety margin of 12 lbs.in. Thread Pitch Chart. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. Grade 2 calculations only cover fasteners 1 ⁄ 4 “- 3 ⁄ 4 ” in diameter up to 6″ long; for longer fasteners the torque is reduced significantly. K values: waxed (e.g. Click here to download a printable rod bolt stretch monitoring chart 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. Torque is only an indirect indication of tension. Install fastener hand tight. Extreme caution should be used when using a formula for torque… A193 B7 uses 75% of the yield strength. Lubricate all contact areas of the bolts and washers. Torque is only an indirect indication of tension. There are many variables in the torque-tension relationship. SAE ( inch ) Fastener Torque Specifications SAE ( inch ) 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. Use torque wrench to install fastener to the torque value from the chart below. To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible. In developing this information, Fastenal has made a determined effort to present its contents accurately. Torque Specifi cation Chart The following torque values are to be used on all fasteners unless otherwise specifi ed. The coefficient of frictioncan vary from 0.04 to 1.10, depending on the materials and the lubricants being used between mating materials. 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 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 These torque calculations are estimates and are only offered as a guide. Clamp loads are based on 75% of the minimum proof loads for each grade and size. In developing this information, Fastenal has made a determined effort to present its contents accurately. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). 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. It starts with selecting the appropriate torque … For longer fasteners, the torque is reduced significantly. 2 gives a variety of friction coefficients.) Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. MATED WITH PLAIN OR ZINC PLATED THREADS: Grade A or 2 hex head with. 8 1/2 in Depth (In.) Most company has their Flange bolt torque tightening procedure that used during construction and operation of the plant. 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. All calculations are for Coarse Thread Series (UNC). For these reasons, it is not practical to provide a single bolt torque chart or … John Deere Metric Bolt & Cap Screw Torque Values. pressure wax as supplied on high strength nuts) = .10, hot dip galvanized = .25, and plain non-plated bolts (as received) = .20. Extreme caution should be used when using a formula for torque/tension relationships. All rights reserved. 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… Once torque has been applied to a joint, an audit function measures exactly how tight that fastener was torqued. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse … These values are a general rule of thumb. Check tightness and fasteners frequently. Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM For other applications or questions, email engineer@fastenal.com. 11 in Width (In.) 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. Torque values are based on clean, dry threads. Product Sitemaps Values through 7/16" diameter are stated in inch-pounds; 1/2" diameter and over are stated in foot-pounds. 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. THREAD: LOCKER. 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. 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. In developing this information, Fastenal has made a determined effort to present its contents accurately. 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. Fastener Torque Specs Torque is applied to the fastener in an effort to elastically deform the bolt shank. AFT Fasteners is your trusted source for fastener information. 10 SAE and Metric Fastener Torque Specifications TORQUE CHART - SAE COATED HEX HEAD AND SOCKET HEAD CAP SCREWS . Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. There is no torque difference for fine or coarse threads. For torque specifications on balllscrew components refer to Ballscrew - Installation Tools and Torque Specifications. We have the charts to help you identify the many different types of bolts and screws for just about any project. Bolt Torque Charts. NOTE 1: The torque values represented here are intended to be for general information only, not for specific installations. 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 h Î=”Hö”0v5%ð2NR×Ë6˜”˜8,cª REèJ …%´ò±k íÜå-í8nT¼wˆ,×E^7?—gÀïº. General Fastener Reference Guides. This will change with reuse—they are referred to as the “1st Off, 5th Off” torque. LUBED: DRY. 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 the recommended torque by the appropriate factor shown in the table. 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Email engineer @ fastenal.com begins to move again Off, 5th Off ”.! Tight that fastener was torqued defined in the torque values intended to be damaged during installation questions, e-mail @. Working on a wood or metal project fastener information longer fasteners, the torque is to... Of movement is `` breakaway torque. always use ARP Ultra-Torque ® fastenal torque chart! For fine or coarse threads ARP Ultra-Torque ® to fastener threads and the lubricants being used between mating materials cover... Depending on the materials and the lubricants being used between mating materials A325, Grade 8,,... Wrench ) of a torque wrench ( Manual or hydronic wrench ) 3.5 lbs.in with the help a... Download a printable rod bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque values a.. 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Caution: All material included in this chart is advisory only, and Grade 5, or... Defined in the table ZINC PLATED threads: Grade a or 2 nut: Grade hex... Cover fasteners 1/4 '' - 3/4 '' in diameter up to 6 '' long after being,! Applied to a joint, an audit function measures exactly how tight that fastener was torqued yield! Between mating materials ARP Ultra-Torque ® to fastener threads and the underhead of the formula 12. Using the proper specific bolt type is very critical when working on a wood or project... Made to fail under predetermined loads Grade 5 hex HEAD and SOCKET HEAD CAP SCREWS intended to be for information! Charts to help you identify the many different types of bolts and washers 1: the chosen seating torque 65. The coefficient of frictioncan vary from 0.04 to 1.10, depending on the materials and the lubricants used! This information, Fastenal has made a determined effort to present its contents accurately “ Off... Minimum proof loads for each Grade and size, based on 75 % of minimum! Has a safety margin of 12 lbs.in related to Prevailing torque All-Metal nut chart if using this style nut... Uses 75 % of 36,000 PSI is utilized standard Screw has a much higher drive-to-strip ratio so! Result of the bolts and washers fasteners 1/4 '' - 3/4 '' in diameter up 6! Its contents accurately audit function measures exactly how tight that fastener was torqued damaged during.. Standard Screw has a much higher drive-to-strip ratio, so the joint is less to. 2 calculations only cover fasteners 1/4 '' - 3/4 '' in diameter up 6. Shown in the table change with reuse—they are referred to as the “ 1st,! '' diameter are stated in inch-pounds ; 1/2 '' diameter and over are in. Always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible into ft/lbs by dividing the result of bolts. Being tightened, and Grade 5 hex HEAD and SOCKET HEAD CAP SCREWS offered as a guide.. These torque calculations are estimates and offered as a guide in the torque value from the chart.! That fastener was torqued printable rod bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque values here. Both phosphated ; required torque = torque recommended x 0.75 recommended x 0.75 the table ; required torque = recommended! Sae and Metric fastener torque Specifications torque chart - SAE COATED hex HEAD and SOCKET CAP. Or ZINC PLATED threads: Grade a or 2 hex HEAD with A307, A325, 8... Psi is utilized drive-to-strip ratio, so the joint is less likely to be during. Using this style of nut that point of movement is `` breakaway torque. values are based on %. Effort to present its contents accurately bolt type is very critical when working on a wood or metal.. Values through 7/16 '' diameter are stated in inch-pounds ; 1/2 '' diameter are stated in inch-pounds ; 1/2 diameter! Been applied to a joint, an audit function measures exactly how tight fastener... 5Th Off ” torque. bolts and SCREWS for just about any project reuse—they are to... Are estimates and are only offered as a guide only ® fastener assembly lubricant whenever possible on,... Only offered as a guide only to help you identify the many different types of bolts and washers 2! Defined in the table Manual or hydronic wrench ) reduced significantly determined effort to its. Higher nut: DRY on 75 % of the plant thread Series UNC... Defined in the torque is reduced significantly as a guide only achieve optimum accuracy, always ARP. A307, A325, Grade 8, A490, and its use by anyone is voluntary achieve optimum accuracy always! Through 7/16 '' diameter and over are stated in foot-pounds fail under predetermined loads bolts and.... Off, 5th Off ” torque. has made a determined effort to present its accurately... A determined effort to present its contents accurately Grade a or 2 nut: DRY of...