Torque Table The following suggested tightening torques provide an excellent starting point for determining torque requirements. The outside diameter of the ring is constrained, so the inside diameter must allow this deformation without overfilling the mating thread, or the ring can be pushed out of the nut. All other torque values are in foot lb. These nuts can withstand extreme amounts of torque and therefore, can be used in high strength and industrial applications. The same as it was without the nylock. 3) Top insert, two-piece construction nuts which derive their prevailing-torque characteristics from an insert, usually a full ring of non-metallic material, located and retained in the nut at its top surface. IFI-100 does not govern lock nuts above 1". 0000036287 00000 n Example: bolt and nut are both phosphated; required torque = torque recommended x 0.75. 0000001336 00000 n Nylock Torque Values . This metal to metal contact results in a positive resistance to vibration and loosening. Also referred to as a Nylock. Flange Nyloc (nylon insert) Nuts are torque prevailing nuts which use plastic/nylon inserts that are located towards the top of the nut – which reduce its inner diameter – therefore deforming the insert over the mating thread and capturing the bolt or screw and providing a locking feature. 0000058773 00000 n These include: 2-way reversible lock nuts, Flex-Type Lock Nuts, Stover Lock Nuts. Grade C Grade B Grade G They are a one piece all metal prevailing torque type hex lock nut having a conical top with chamfered corners. Once tightened, the nylon insert prevents the nut … If the material is a grade 5 nut as others have suggested then use correct torque for the material." 0000008040 00000 n Making the chart is that easy! 2620 0 obj <> endobj xref The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. Nyloc nut The nylon collar insert is placed at the end of the nut, with an inner diameter (ID) … 1-Prevailing Torque Type Lock Nuts: All metal prevailing torque type lock nuts achieve their prevailing torque by altering the shape of the nut in some way – most commonly by distorting the threads of the nut which then bites into the mating part when tightened. 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. Standard Prevailing-Torque Metric Hex Nuts Size Data Table Property Classes 5, … Design Resources | Torque Design Menu Torque-Force Calculator | Torque Conversion Calculator. There is no torque difference for fine or coarse threads. When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point. 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 hex nuts feature a nylon insert that adds resistance and grip as it is deformed when the threads from the bolt pass through. 0000010534 00000 n 2.5–5.0 Nm, Fifth Removal Prevailing Off Torque: min. If you set up a nut and bolt in a Skidmore-Wilhelm load cell and tighten the bolt to a certain cut-off spec using a torque wrench, the actual measured tension will not necessarily match the tension stated on the torque chart. 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. ** Torque values for 1/4" and 5/16" sizes are in inch lb. Nylok® Torq-Patch® Locknut is a self-locking element comprised of nylon permanently bonded into the threads of a nut. I would suggest a nylock nut for something like this because its clean & simple and can still be removed. Nuts exposed to high levels of vibration can become loose. For A307 Grade A, 75% of 36,000 PSI is utilized. The nylon collar insert is placed at the end of the nut, with an inner diameter (ID) slightly smaller than the major diameter of the screw. 0000014050 00000 n nuts equal 75% of the bolt proof loads specified for SAE J-429 Grade 8, and ASTM A-354 Grade BD bolts. The values shown in the chart are to be used as a mid-range guideline. JJPellin, Is this with or without the use of a tabbed lock washer? ANSI Hardware Design Guide Design Torque and Force Calculations. Line charts make it simpler to find assistance and resistance together with chart patterns. 0000001720 00000 n The values shown in the chart are to be used as a mid-range guideline. Cu/C paste = Copper/graphite paste (Molykote® 1000) Oil = WD40 has been used. Torque has been converted into ft/lbs by dividing the result of the formula by 12 All calculations are for Coarse Thread Series (UNC). RE: bearing retaining nut torque specifications rmw (Mechanical) 26 Jun 10 16:12. All other torque values are in foot lb. Metric Bolt Torque Chart. Self Locking nuts have a thread locking system that resists the screw reverse turning or backing off; most nylon insert systems possess a nylon 66 thread interference characteristic that resists loosening under vibration. 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. GMX Search – quick, clear, accurate. 1.8–2.8 Nm. 0000030245 00000 n Choose from our selection of nylock nuts, including over 700 products in a wide range of styles and sizes. Nylok® Blue Nylon Torq-Patch® Tuflok® Prevailing Torque Locking Element. A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, stiff nut or elastic stop nut, is a nut that resists loosening under vibrations and torque. 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. Nylon insert nuts to American specification with all the different types and a dimensional comparison page. 0000026674 00000 n 0000053049 00000 n μ th = Thread friction coefficient μ h = Under head friction coefficient 1 N = 0.225 lb 1 Nm = 0.738 ft-lb. The prevailing torque in prevailing torque locknuts comes from localized plastic deformation to an interference fit with continuous sliding during assembly. 0000027112 00000 n 0000061081 00000 n 2620 39 The nut is locked by means of three radial brass locking pins arranged at the same angle as the thread flanks. The resistance to loosening forces is created by distortion in the top threads. Make your own chart. Wheel Torque Chart If you are planning on installing a wheel on your vehicle, it is important to be aware of the manufacturer recommended torque settings. Choose from our selection of nylock nuts, including over 700 products in a wide range of styles and sizes. 0000009992 00000 n Now install nyloc, and tighten until the bolt is the same lenght as with the plain nut, thats as close as you can get with nyloc's. Nylon Lock Nut Specifications Chart. In stock and ready to ship. 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.. His second discovery was made by plotting the bolt tension vs vibration cycles to create a ‘preload decay chart’. Nylon insert lock nuts that experience field issues, most often, … This removes the need for a locking washer and keyway. Size Recommended Torque; Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass; Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine #4*-----5.2-4.8-4.3 0000013678 00000 n h�b```g``�����p�#��XX80t�``�s I�!X�����Zo��� >�`ZFG�����Ҁ����!��w�@�����~�f�BI�^֙"�b�����}XǶ�z�C�W���,��d�. These nuts are manufactured strictly as per DIN standard 985,6924 & ISO Standard 7040 depending upon the requirement.TorqBolt manufacture these nylon locking nuts in all stainless steel grades,brass & other exotic material Earnest Machine Products line of NE series (sizes 1/4” and larger) and NM series (sizes #2 to #12) nylon insert lock nuts are made to the dimensional requirements of the Industrial Standards Institutes specification IFI 100/107 for top insert style with light series hex. 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. The primary is torque. Nylok® Torq-Patch® Locknut is a self-locking element comprised of nylon permanently bonded into the threads of a nut. A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, or elastic stop nut... many times, and a Federal Aviation Administration Advisory Circular allows nuts to be reused if the prevailing torque is within specification. In stock and ready to ship. • IFI-100 does not govern lock nuts above 1". Use Prevailing Torque All-Metal Nut chart if using this style of nut. 0000014498 00000 n 0000056491 00000 n After installation, the residual stresses from the elastic part of the deformation cause the prevailing torque friction forces. Typically there are the "Nylock" or elastic stop nuts, and the "all-metal" lock nuts. %PDF-1.4 %���� 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. When the Nylok® Torq-Patch® Locknut is engaged, it creates a wedge between the nut and mating part compressing the nylon and creating metal to metal contact opposite the patch. Let's break this down. 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. When the Nylok® Torq-Patch® Locknut is engaged, it creates a wedge between the nut and mating part compressing the nylon and creating metal to metal contact opposite the patch. Grade 2 calculations only cover fasteners 1⁄4"-3⁄4" in diameter up to 6" long; for longer fasteners the torque is reduced significantly. This was an iPart pulled originally from www.cbliss.com and we broke them apart for our library. Dimensions shown are in Inches, if you wish to convert to mm, please use ouruniversal converter. 0000000016 00000 n Jam A hex nut with a reduced height. A Nyloc (nylon insert) Nut is a torque prevailing nut which uses a plastic/nylon insert located towards the top of the nut, reducing its inner diameter, which then deforms over the mating thread. A nut that stays tight. Make your own chart. Once it is fixed on a bolt, its nylon structure gets jammed along the threads of bolt. Localized plastic deformation - Some of the starting threads need to be able to accept the mating part (bolt, say) before the prevailing torque begins. 0000008595 00000 n 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. 0000051046 00000 n VS "Since the nylon ring keeps the nut on the bolt, and not the torque, use just enough torque to snug it up." 0000023845 00000 n Prevailing Torque Lock Nuts or Nylon lock nuts or nylock nuts are hex nuts with polymer structure along the inner side of the nut. Torque … Nylock Nut Specification . The nut can be accurately located at right angles to the shaft by means of the radial locking pins and can be re-used. Seems to be two lines of thought on using nylock fasteners..:blink: "Nylock adds a secondary retention to the nut. Folder. 0000027630 00000 n Nylon Insert Jam Lock A nylock nut with a reduced height. The solution is a nylock nut. The outside diameter of the ring is constrained, so the inside diameter must allow this deformation without overfilling the mating thread, or the ring can be pushed out of the nut. The following suggested tightening torques provide an excellent starting point for determining torque requirements. (Click on the appropriate link below. December 1st, 2013 Nylock Nut, Inch UNC STP.stl. Minimum torque if scatter is +23% = 1,602 x 0.77 = 1,234 Nm Torque should be set to 1,602 Nm (mean torque) on the torque wrench The accuracy of the tightening method, as well as the change in friction, needs to be accounted for in order not to over-tighten the fastener. 0000001560 00000 n correct torque can however present problems. Torque Specs For Nylock Nuts . 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. Recommended Bolt Torque Values for Stainless Steel and Nonferrous Fasteners (inch series). Prevailing torque of the lock nut should be determined by testing an actual nut and fastener and that number should be added to the desired torque to arrive at a torque spec. Nylon insert locking nuts with metric threads to DIN 985 and DIN 982 in steel and stainless steel, this is the full range of metric. )Terms and Conditions of Sale - Conditions of Purchase - Service Agreement, Torq-Patch Locknut RoHS / WEEE Compliance, Resistant to lubricants, fuel, hydraulic fluids and most commercial solvents, Can be applied to any size or thread configuration larger than a M6/1/4” nut, Bonds to a broad range of fastener finishes, Complies with or exceeds IFI, DIN and major OEM specifications, Is not affected by high humidity conditions, 180° (standard) or 360° (optional) radial coverage, Torque can be adjusted to meet specific applications, No metal removal to reduce fastener strength or performance, Color: blue/red (special colors available upon request), Temperature Range: -56°C (-70°F) to +121°C (+250°F), NYLOK® TORQ-PATCH® locknut is also referred to as TUFLOK®, First Removal Prevailing Off Torque (without preload): min. 0000009298 00000 n Choose from our selection of prevailing torque locknuts, including nylon-insert locknuts, distorted-thread locknuts, and more. 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