Grade A or 2 nut: Grade 5 hex head with. Clamp loads are based on 75% of the minimum proof loads for each grade and size. Most company has their Flange bolt torque tightening procedure that used during construction and operation of the plant. 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. Knowing the … Cheat Guide Chart – Bolts, Screws, Washers, Nuts, Drive Charts Read More » LUBED: DRY. Thread Pitch Chart. 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 … 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. Shear bolts are made to fail under predetermined loads. Torque is only an indirect indication of tension. For torque specifications on balllscrew components refer to Ballscrew - Installation Tools and Torque Specifications. 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Torque values are based on clean, dry threads. Thread pitch is the distance between threads expressed in mm. 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. 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. It starts with selecting the appropriate 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 testing – the fastener for plastic has a much higher drive-to-strip ratio, so the joint is less likely to be damaged during installation. Click here to download a printable rod bolt stretch monitoring chart To achieve optimum accuracy, always use ARP Ultra-Torque ® fastener assembly lubricant whenever possible. 8 1/2 in Depth (In.) These values are a general rule of thumb. 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. 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… See Torque Force Design Equations webpage and torque chart page for recommended fastener torque and equation data.. 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 Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. 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. This will change with reuse—they are referred to as the “1st Off, 5th Off” torque. In developing this information, Fastenal has made a determined effort to present its contents accurately. Apply ARP Ultra-Torque ® to fastener threads and the underhead of the bolt or underside of the nut. General Fastener Reference Guides. Torque (Nm) Torque (ft-lbs) Caution: All material included in this chart is advisory only, and its use by anyone is voluntary. Grade 5, F or higher nut: DRY. Bolt tightening sequence or torque sequence is defined in the torque tightening procedure. There is no torque difference for fine or coarse threads. Title: Metric Bolts, Screws & Nuts: Tightening Torques Author: Fastener Mart Created Date: 8/12/2006 10:22:23 PM 2 gives a variety of friction coefficients.) Using the proper specific bolt type is very critical when working on a wood or metal 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). (Table IV from ref. Values calculated using industry accepted formula T = KDP where T = torque, K = torque coefficient (dimensionless), D = nominal diameter (inches), P = bolt clamp load (lbs). Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. 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