** Torque values for 1/4" and 5/16" sizes are in inch lb. Surface condition of nut 0.70 0.65 0.70 0.75 Zinc with wax 0.60 0.55 0.65 0.55 Formulae Accepted formulae relating torque and tension, based on many tests are: M = P x D M = torque lbf.ft 60 P = bolt tension lbf D = bolt dia.ins Or for metric sizes: M = P x D M = torque … 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 Values and Friction Coefficient - All Metal Self Locking Nuts - Where Torque tightening equipment is used, account should be taken of the additional torque required to overcome the resistance of the prevailing torque locking nut. It can therefore be seen that only something in the order of 10% effort is … After installation, the residual stresses from the elastic part of the deformation cause the prevailing torque friction forces. If the torque specification for a hex nut is 10 ft-lb, the Stover nut will not need additional torque to fully deform the threads (same for a Nylock nut). Using nylock nuts allows you to use it repeatedly without damaging the threads of screws, but it comes at the cost of damaging the nylon present in the nut. Nyloc Nut - Nylon Insert Lock Nuts A nylon insert lock nut, also referred to as a nyloc nut, polymer-insert lock nut, or nylon insert (elastic) stop nut, is a common type of locknut comprised of a hex nut with a fixed nylon-filled collar at its back end. Let's break this down. They are a one piece all metal prevailing torque type hex lock nut having a conical top with chamfered corners. 0000001076 00000 n 0000051046 00000 n Choose from our selection of nylock nuts, including over 700 products in a wide range of styles and sizes. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point. Seems to be two lines of thought on using nylock fasteners..:blink: "Nylock adds a secondary retention to the nut. 0000026674 00000 n Dimensions shown are in Inches, if you wish to convert to mm, please use ouruniversal converter. RE: bearing retaining nut torque specifications rmw (Mechanical) 26 Jun 10 16:12. It is advised to restrict its usage to not more than 50 times. The same as it was without the nylock. And if with, how do you correlate the correct torque with … December 1st, 2013 Nylock Nut, Inch UNC STP.stl. 0000045681 00000 n 0000016802 00000 n nuts are high pre-cision compo-nents. Nylon Lock Nut Torque Specs Unbrako hex nuts, nylock nuts, hex weld nuts, coupling nuts & serrated flange nuts - Metric & Inch. After installation, the residual stresses from the elastic part of the deformation cause the prevailing torque friction forces. There is no torque difference for fine or coarse threads. Shiv Om Fastners - Manufacturers, Dealers And Stockiest Of Nylock Nut, Self Locking Nut, Prevailing Torque Nut, DIN 692, Safety Washer DIN 934, Wave Washer, Wave Washer DIN 137 A, Clinch Stud, Clinch Nut in Thane, Mumbai, India 0000013186 00000 n 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. A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut, is a kind of locknut with a nylon collar that increases friction on the screw thread.. Torque Table. For A307 Grade A, 75% of 36,000 PSI is utilized. Make your own chart. Torque Values Stainless Steel Bolt Table Chart. 2.5–5.0 Nm, Fifth Removal Prevailing Off Torque: min. A nut that stays tight. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant. Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. Bolt Torque Chart PDF . Grade C Grade B Grade G nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. Elastic stop nuts and prevailing torque nuts are of the particular type where some portion of the nut deforms elastically to provide a locking action. Cu/C paste = Copper/graphite paste (Molykote® 1000) Oil = WD40 has been used. Hexagon locking nuts with a nylon locking ring inserted. If, however, we take our original torque of 10.5 and add the 2 that the Nylock requires and set our torque wrench to 12.5, our clamp load is 2,511 pounds. 0000053049 00000 n In stock and ready to ship. Once it is fixed on a bolt, its nylon structure gets jammed along the threads of bolt. In stock and ready to ship. The nut is locked by means of three radial brass locking pins arranged at the same angle as the thread flanks. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. Whether it is an awful 3D donut chart or the stunning however impenetrable display screens produced by Territory Studios, reveals and films have plenty of charts. A Nylon Lock Nut is a classic locking Nut with a nylon insert for stiffness & vibration resistant.Also called as Nyloc Nuts, Locking Nuts, Stiff Nuts, Prevailing Torque Nuts. Clamp loads for Grade C lock nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. Standard Prevailing-Torque Metric Hex Nuts Size Data Table Property Classes 5, … That type of locknut can and will tear up the fastener and gall and even seize unless lubricated with something nice . All other torque values are in foot lb. The AutoCAD download is all … Approximately 90% of the applied torque is employed in overcoming friction, 50% at the bearing face of the nut and 40% between the mating threads. Nyloc Nuts G304 & G316 Dome (Acorn) Nuts G304 & G316 Wing Nuts G304 & G316 Hex Coupling Nuts G316 Hex Flange Serrated Nuts G304 Hex Slotted Nuts G316. Take the bolt to which you will be adding a nyloc to, measure its lenght with a mic, install and torque plain nut, measure its lenght again. 0000006996 00000 n Localized plastic deformation - Some of the starting threads need to be able to accept the mating part (bolt, say) before the prevailing torque begins. November 7th, 2012 Nylock Nut, Inch UNC STP.zip. Typically there are the "Nylock" or elastic stop nuts, and the "all-metal" lock nuts. Metric DIN 980 All Metal Prevailing Torque Type Hex Lock Nuts are also known as Stover Lock Nut, Top Lock Nut, Crimped Lock Nut, Oval Lock Nut. These nuts can withstand extreme amounts of torque and therefore, can be used in high strength and industrial applications. Short answer: no. The amount of torque required to run the nut down (friction drag torque) should be measured and added to the amount of torque specified for the fastener. 0000027112 00000 n 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. Can pull it from the elastic part of the radial locking pins and can still be removed govern! In Inches, if you want the iPart, you may need to these! Retaining nut torque Specs the nut december 1st, 2013 nylock nut distortion in chart!, including nylon-insert locknuts, and the `` All-Metal '' lock nuts or nylon lock nut torque then. 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