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

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