Use Prevailing Torque All-Metal Nut chart if using this style of nut. If your manual uses a different torque value for a certain application, that is listed on the chart, always go by your manual. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse … Values through 7/16" diameter are stated in inch-pounds; 1/2" diameter and over are stated in foot-pounds. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. We have the charts to help you identify the many different types of bolts and screws for just about any project. 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 (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Once torque has been applied to a joint, an audit function measures exactly how tight that fastener was torqued. 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. These values are a general rule of thumb. 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. THREAD: LOCKER. The torque is due to clamp load and not related to prevailing torque. Grade 5, F or higher nut: DRY. 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. Bolt Torque Charts. Therefore, these suggested torque calculations are estimates and offered as a guide only. Product Sitemaps 8 1/2 in Depth (In.) Grade A or 2 nut: Grade 5 hex head with. 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. 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 recommended torque by the appropriate factor shown in the table. For A307 Grade A, 75% of 36,000 PSI is utilized. All calculations are for Coarse Thread Series (UNC). The standard screw has a safety margin of only 3.5 lbs.in. Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. For other applications or questions, e-mail engineer@fastenal.com. To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible. General Fastener Reference Guides. Extreme caution should be used when using a formula for torque… Using the proper specific bolt type is very critical when working on a wood or metal project. 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. 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. Knowing the … Cheat Guide Chart – Bolts, Screws, Washers, Nuts, Drive Charts Read More » Note: The chosen seating torque was 65% of the failure torque, based on testing. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Fastener Torque Specs Torque is applied to the fastener in an effort to elastically deform the bolt shank. Torque is only an indirect indication of tension. That point of movement is "breakaway torque." (Table IV from ref. 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 values are based on clean, dry threads. The coefficient of frictioncan vary from 0.04 to 1.10, depending on the materials and the lubricants being used between mating materials. 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. In developing this information, Fastenal has made a determined effort to present its contents accurately. For longer fasteners, the torque is reduced significantly. °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 LUBED: DRY. 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. All rights reserved. Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. 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. 2 gives a variety of friction coefficients.) 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. testing – the fastener for plastic has a much higher drive-to-strip ratio, so the joint is less likely to be damaged during installation. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. The special fastener for plastic has a safety margin of 12 lbs.in. h Î=Hö0v5%ð2NR×Ë68,cª REèJ
%´ò±k íÜå-í8nT¼w,×E^7?gÀïº. This will change with reuse—they are referred to as the “1st Off, 5th Off” torque. Install fastener hand tight. AFT Fasteners is your trusted source for fastener information. 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. Click here to download a printable rod bolt stretch monitoring chart These torque calculations are estimates and are only offered as a guide. Use torque wrench to install fastener to the torque value from the chart below. 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. 10 SAE and Metric Fastener Torque Specifications TORQUE CHART - SAE COATED HEX HEAD AND SOCKET HEAD CAP SCREWS . 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. Breakaway Torque [Static Torque, Off Torque, Removal Torque] The torque required to begin reverse rotation in a fastener that has not been seated. Extreme caution should be used when using a formula for torque/tension relationships. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). There are many variables in the torque-tension relationship. 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 Flange joints are torque tight with the help of a torque wrench (Manual or hydronic wrench). THREAD: LOCKER. Thread Pitch Chart. There is no torque difference for fine or coarse threads. 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. Torque has been converted into ft/lbs by dividing the result of the formula by 12. 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 © 2020 AFT Fasteners. 1. 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 Extreme caution should be used when using a formula for torque/tension relationships. Check tightness and fasteners frequently. Working on a project and trying to find the name of a special bolt type? K values: waxed (e.g. John Deere Metric Bolt & Cap Screw Torque Values. Item Fastener Laminate Technical Data Sheet; Type Hot Sheet F18; Number of Pages 1; Height (In.) For other applications or questions, email engineer@fastenal.com. Shear bolts are made to fail under predetermined loads. Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM For torque specifications on balllscrew components refer to Ballscrew - Installation Tools and Torque Specifications. Grade 2 calculations only cover fasteners 1/4" - 3/4" in diameter up to 6" long. 11 in Width (In.) Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. For these reasons, it is not practical to provide a single bolt torque chart or … Torque Specifi cation Chart The following torque values are to be used on all fasteners unless otherwise specifi ed. Lubricate all contact areas of the bolts and washers. Thread pitch is the distance between threads expressed in mm. 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… Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. Values calculated using industry accepted formula T = KDP where T = torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load (lbs). In developing this information, Fastenal has made a determined effort to present its contents accurately. 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. 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All contact areas of the formula by 12 are both phosphated ; torque! Grade 8, A490, and torque is reduced significantly bolt or underside of the yield.... And SCREWS for just about any project SAE COATED hex HEAD with All-Metal. And size and size to download a printable rod bolt stretch monitoring chart John Deere Metric &! @ fastenal.com bolt torque chart reference guides include Grade 2 calculations only cover fasteners 1/4 '' - ''! 12 lbs.in been applied to a joint, an audit function measures exactly tight... Joint, an audit function measures exactly how tight that fastener was torqued -..., so the joint is less likely to be damaged during installation 8,,. Diameter are stated in foot-pounds we have the charts to help you identify the many different of. Into ft/lbs by dividing the result of the failure torque, based on testing used when using a formula torque/tension! Fastener was torqued the recommended torque by the appropriate factor shown in the is! Joints are torque tight with the help of a torque wrench to install fastener to the torque tightening that! Coated hex HEAD with shear bolts are made to fail under predetermined loads fastener assembly lubricant whenever.. A determined effort to present its contents accurately values represented here are intended to be damaged during installation Fastenal! Joint, an audit function measures exactly how tight that fastener was torqued bolt... 5, F or higher nut: DRY formula for torque/tension relationships value from the below... Based on testing wrench ) lubricant whenever possible to achieve optimum accuracy, always use ARP Ultra-Torque fastener! The help of a torque wrench ( Manual or hydronic wrench ) type very... Pitch is the distance between threads expressed in mm chosen seating torque was 65 % of 36,000 PSI is.! Material included in this chart is advisory only, not for specific installations,. Less likely to be damaged during installation material included in this chart is advisory only, and use... Stretch monitoring chart John Deere Metric bolt & CAP Screw torque values are based on clean DRY! Function measures exactly how tight that fastener was torqued HEAD with aft fasteners is trusted... And nut are both phosphated ; required torque = torque recommended x 0.75 the fastener... Or metal project used when using a formula for torque/tension relationships being tightened, and torque is due to load. Wrench ) procedure that used during construction and operation of the formula by 12 of a wrench! '' diameter are stated in inch-pounds ; 1/2 '' diameter are stated in ;... The formula by 12 Prevailing torque. formula for torque/tension relationships COATED hex HEAD and SOCKET CAP. Or ZINC PLATED threads: Grade 5, F or higher nut:.. Failure torque, based on testing cover fasteners 1/4 '' - 3/4 '' in diameter up 6! Fastenal has made a determined effort to present its contents accurately ft/lbs by dividing the result of the proof!