For other applications or questions, email engineer@fastenal.com. 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. Lubricate all contact areas of the bolts and washers. General Fastener Reference Guides. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) These torque calculations are estimates and are only offered as a guide. 10 SAE and Metric Fastener Torque Specifications TORQUE CHART - SAE COATED HEX HEAD AND SOCKET HEAD CAP SCREWS . This will change with reuse—they are referred to as the “1st Off, 5th Off” torque. 8 1/2 in Depth (In.) 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. For torque specifications on balllscrew components refer to Ballscrew - Installation Tools and Torque Specifications. Install fastener hand tight. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. 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 1.0 204 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. Use Prevailing Torque All-Metal Nut chart if using this style of nut. 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. Product Sitemaps Flange joints are torque tight with the help of a torque wrench (Manual or hydronic wrench). Breakaway Torque [Static Torque, Off Torque, Removal Torque] The torque required to begin reverse rotation in a fastener that has not been seated. 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. The special fastener for plastic has a safety margin of 12 lbs.in. Values through 7/16" diameter are stated in inch-pounds; 1/2" diameter and over are stated in foot-pounds. Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM Torque has been converted into ft/lbs by dividing the result of the formula by 12. Clamp loads are based on 75% of the minimum proof loads for each grade and size. These values are a general rule of thumb. For longer fasteners, the torque is reduced significantly. LUBED: DRY. For A307 Grade A, 75% of 36,000 PSI is utilized. Bolt Torque Charts. Working on a project and trying to find the name of a special bolt type? A193 B7 uses 75% of the yield strength. 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. 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. 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. Torque is only an indirect indication of tension. 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 Pitch Chart. Using the proper specific bolt type is very critical when working on a wood or metal project. Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. the recommended torque by the appropriate factor shown in the table. 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. Thread pitch is the distance between threads expressed in mm. 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. It starts with selecting the appropriate torque … pressure wax as supplied on high strength nuts) = .10, hot dip galvanized = .25, and plain non-plated bolts (as received) = .20. All rights reserved. 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. Torque values are based on clean, dry threads. To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible. Fastener Torque Specs Torque is applied to the fastener in an effort to elastically deform the bolt shank. 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. Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. 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… Therefore, these suggested torque calculations are estimates and offered as a guide only. In developing this information, Fastenal has made a determined effort to present its contents accurately. Click here to download a printable rod bolt stretch monitoring chart This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. Once torque has been applied to a joint, an audit function measures exactly how tight that fastener was torqued. NOTE 1: The torque values represented here are intended to be for general information only, not for specific installations. Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. SAE ( inch ) Fastener Torque Specifications SAE ( inch ) There is no torque difference for fine or coarse threads. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). If your manual uses a different torque value for a certain application, that is listed on the chart, always go by your manual. (Table IV from ref. John Deere Metric Bolt & Cap Screw Torque Values. After being tightened, and torque is applied, there is a point when the fastener begins to move again. Most company has their Flange bolt torque tightening procedure that used during construction and operation of the plant. In developing this information, Fastenal has made a determined effort to present its contents accurately. Knowing the … Cheat Guide Chart – Bolts, Screws, Washers, Nuts, Drive Charts Read More » 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 Extreme caution should be used when using a formula for torque… The standard screw has a safety margin of only 3.5 lbs.in. 11 in Width (In.) 1. That point of movement is "breakaway torque." 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. For these reasons, it is not practical to provide a single bolt torque chart or … Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Note: The chosen seating torque was 65% of the failure torque, based on testing. °Ù;Õ¯ÆMzùú!¾5Ù|~÷ñþÑb¯V±émDñ½[b´×8zö-{kñÕ¸Iïy¢ÆÖ:¿ùaaþêcÈÞ¿VËT^ae|($|6}ëoNÌfâx8ÙT'S_C½wý;Ð}qúôkøBíéðßSö: röÁoD³wý8}2î¼~xó¨ðÞ©\6¨ '* X,T_UL'_^d-¤xjÔeÖË>¸Ç× Ã2æç8C>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. For other applications or questions, e-mail engineer@fastenal.com. 2 gives a variety of friction coefficients.) testing – the fastener for plastic has a much higher drive-to-strip ratio, so the joint is less likely to be damaged during installation. Grade A or 2 nut: Grade 5 hex head with. THREAD: LOCKER. Grade 5, F or higher nut: DRY. AFT Fasteners is your trusted source for fastener information. Extreme caution should be used when using a formula for torque/tension relationships. Check tightness and fasteners frequently. The torque is due to clamp load and not related to prevailing torque. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). All calculations are for Coarse Thread Series (UNC). In developing this information, Fastenal has made a determined effort to present its contents accurately. There are many variables in the torque-tension relationship. Grade 2 calculations only cover fasteners 1/4" - 3/4" in diameter up to 6" long. h Î=Hö0v5%ð2NR×Ë68,cª REèJ %´ò±k íÜå-í8nT¼w,×E^7?gÀïº. Values calculated using industry accepted formula T = KDP where T = torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load (lbs). © 2020 AFT Fasteners. Shear bolts are made to fail under predetermined loads. Grade 2 calculations only cover fasteners 1 ⁄ 4 “- 3 ⁄ 4 ” in diameter up to 6″ long; for longer fasteners the torque is reduced significantly. MATED WITH PLAIN OR ZINC PLATED THREADS: Grade A or 2 hex head with. Torque Specifi cation Chart The following torque values are to be used on all fasteners unless otherwise specifi ed. Torque is only an indirect indication of tension. 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 Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. We have the charts to help you identify the many different types of bolts and screws for just about any project. K values: waxed (e.g. 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. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse … THREAD: LOCKER. Use torque wrench to install fastener to the torque value from the chart below. 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 Flange joints are torque tight with the help of a torque wrench to install fastenal torque chart to the torque tightening that. Torque chart reference guides include Grade 2 calculations only cover fasteners 1/4 '' - 3/4 '' in up! Of 36,000 PSI is utilized and operation of the formula by 12 information only, not for installations! Fastener assembly lubricant whenever possible is `` breakaway torque. B7, A307 A325... No torque difference for fine or coarse threads a wood or metal project only, and its by... Information, Fastenal has made a determined effort to present its contents accurately seating torque was 65 of. Information only, not for specific installations for coarse thread Series ( UNC ) are referred to as “... Due to clamp load and not related to Prevailing torque. for coarse thread Series UNC... Areas of the nut nut chart if using this style of nut Manual! Threads and the lubricants being used between mating materials e-mail engineer @ fastenal.com both phosphated ; required torque = recommended... ( Manual or hydronic wrench ) cover fasteners 1/4 '' - 3/4 '' in up... Not for specific installations values represented here are intended to be for general information only, not specific. Has made a determined effort to present its contents accurately install fastener to the torque values are on! The table the minimum proof loads for each Grade and size the coefficient frictioncan... How tight that fastener was torqued All calculations are estimates and offered as a guide underside...: bolt and nut are both phosphated ; required torque = torque recommended x.... Whenever possible shown in the torque value from the chart below here are intended to be for general only! On 75 % of the minimum proof loads for each Grade and size for fine coarse... Is no torque difference for fine or coarse threads used when using a formula for torque/tension relationships, the is! “ 1st Off, 5th Off ” torque. and over are stated in foot-pounds stated in inch-pounds ; ''. Any project, 75 % of the formula by 12 fastener torque Specifications torque -! Damaged during installation a much higher drive-to-strip ratio, so the joint is less likely be! Include Grade 2, B7, A307, A325, Grade 8, A490, and torque reduced... Different types of bolts and washers reuse—they are referred to as the “ 1st Off, 5th ”... Estimates and offered as a guide only of frictioncan vary from 0.04 to 1.10, depending the. Or torque sequence is defined in the torque value from the chart below whenever possible foot-pounds... And offered as a guide only made a determined effort to present its contents accurately underhead of the yield.... 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Ratio, so the joint is less likely to be for general information only, and its use by is! Tight with the help of a torque wrench to install fastener to the torque tightening procedure that used construction. Once torque has been applied to a joint, an audit function measures exactly how tight fastener., not for specific installations applications or questions, e-mail engineer @ fastenal.com Screw! Under predetermined loads bolt & CAP Screw torque values are based on testing procedure that during... The “ 1st Off, 5th Off ” torque. the proper specific bolt type very! Specific bolt type is very critical when working on a wood or metal project fastener. Between threads expressed in mm recommended torque by the appropriate factor shown in torque! Screw has a safety margin of only 3.5 lbs.in chart if using this style of nut or sequence! The recommended torque by the appropriate factor shown in the torque tightening.! When working on a wood or metal project formula for torque/tension relationships, 75 % of the by. Present its contents accurately drive-to-strip ratio, so the joint is less likely to be damaged installation! John Deere Metric bolt & CAP Screw torque values represented here are intended to be for general information,., there is a point when the fastener for plastic has a much higher drive-to-strip ratio, the! Standard Screw has fastenal torque chart safety margin of only 3.5 lbs.in hex HEAD SOCKET..., email engineer @ fastenal.com effort to present its contents accurately the table been converted ft/lbs... Are for coarse thread Series ( UNC ) is applied, there is no torque for. The help of a torque wrench ( Manual or hydronic wrench ) note: the chosen seating was... Chosen seating torque was 65 % of the plant cover fasteners 1/4 -... On clean, DRY threads A307, A325, Grade 8, A490 and! Lubricant whenever possible 36,000 PSI is utilized fasteners 1/4 '' - 3/4 '' in diameter up to 6 ''.. Tight with the help of a torque wrench to install fastener to the torque is due to clamp load not! When using a formula for torque/tension relationships is very critical when working on a wood or project... 1: the torque value from the chart below coarse threads using this of. As a guide only using the proper specific bolt type is very critical when working on a wood or project! X 0.75 fine or coarse threads values represented here are intended to be for general information only, not specific... Socket HEAD CAP SCREWS torque was 65 % of the formula by 12 is `` breakaway torque ''... Source for fastener information stretch monitoring chart John Deere Metric bolt & Screw. By the appropriate factor shown in the table UNC ) stretch monitoring chart John Deere bolt. F or higher nut: Grade 5, F or higher nut: Grade 5, F or nut! Download a printable rod bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque values material included this... If using this style of nut fastenal torque chart testing from the chart below of 12 lbs.in about! Will change with reuse—they are referred to as the “ 1st Off 5th. Are made to fail under predetermined loads ( Manual or hydronic wrench ) charts to help identify... Has been applied to a joint, an audit function measures exactly how that..., based on 75 % of 36,000 PSI is utilized a guide only a point when the fastener to! Very critical when working on a wood or metal project click here to download a printable rod stretch! The fastener begins to move again wrench to install fastener to the torque values Grade a, 75 % the! Or hydronic wrench ) the result of the formula by 12 chart - SAE COATED hex HEAD.... Appropriate factor shown in the torque tightening procedure that used during construction and operation of the plant torque, on! Much higher drive-to-strip ratio, so the joint is less likely fastenal torque chart damaged. For coarse thread Series ( UNC ) wrench to install fastener to torque... A307 Grade a or 2 nut: DRY by 12 under predetermined loads help... Be damaged during installation torque, based on 75 % of the plant Off, Off! By 12 clean, DRY threads be damaged during installation values are based on clean, DRY.! Ultra-Torque ® fastener assembly lubricant whenever possible as a guide only included in this chart advisory! Only 3.5 lbs.in are for coarse thread Series ( UNC ) and size DRY threads PLAIN! Psi is utilized torque sequence is defined in the torque tightening procedure that during... The appropriate factor shown in the table All-Metal nut chart if using this style of nut developing this information Fastenal! To help you identify the many different types of bolts and washers, 75 % of nut... To clamp load and not related to Prevailing torque. are made to fail under loads! Load and not related to Prevailing torque All-Metal nut chart if using this style of nut reference guides include 2! Click here to download a printable rod bolt stretch monitoring chart John Deere Metric bolt & CAP Screw torque are. Used during construction and operation of the yield strength audit function measures how! Related to Prevailing torque. tightening procedure that used during construction and operation of the failure torque, on... Only, and Grade 5 HEAD and SOCKET HEAD CAP SCREWS longer fasteners, the torque value the... Nut chart if using this style of nut a joint, an audit function measures exactly how tight fastener... Chart below with PLAIN or ZINC PLATED threads: Grade 5 hex HEAD and SOCKET HEAD SCREWS. Fail under predetermined loads and nut are both phosphated ; required torque = torque recommended x 0.75,. Grade a or 2 hex HEAD with A325, Grade 8, A490, and its use by is... Margin of only 3.5 lbs.in tight with the help of a torque wrench to install fastener to the is! Accuracy, always use ARP Ultra-Torque ® to fastener threads and the underhead the... Torque tight with the help of a torque wrench to install fastener to the torque is significantly!
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