When tightening according to guidelines and with no deviation, this is the pre-stress achieved expressed as % of yield point. 1st step, 105 Nm . lbs.) Currently, Engineers Edge supports activities for more than 2 million users every month and serves millions of page views. Torque Settings. For brass, use 70% of the torque value of steel. Bolt Torque Specs in Foot Pounds or (Inch Pounds) Size/Thread Grade 5 Grade 8 Grade ASTM-A574 Class Tensile Torque Reference Chart Metric (ISO 898) - Inch (SAE J429) Note: These charts are provided as a Reference only. All correspondence must be done by email. μ th = Thread friction coefficient μ h = Under head friction coefficient 1 N = 0.225 lb 1 Nm = 0.738 ft-lb. lbs.) Fasteners - Bolts, nuts and threaded rods - torque, tension and loads; Related Documents . Use where maximum tighten-ing torques are required Fasten collars, sheaves, gears, knobs on shafts. Torque should be set to 1,602 Nm (mean torque) on the torque wrench. M16x1.5 10.9 303 Nm (ft. These torque values ? Engineers Edge staff has identified you or your organization as having problems with one or more of the following: About Engineers Edge (www.engineersedge.com) - Engineers Edge is a free premier portal for design, engineering and manufacturing professionals worldwide. Torque Values for A2-70 or A4-70 Metric Stainless Steel Fasteners (N)(lbs) (lbs)(Nm) 3 0.5 3522 792 2264 509 1698 382 0.81 7.2 in-lbs 0.95 8.4 in-lbs 906 204 4 0.7 6145 1381 3950 888 2963 666 1.90 2.21 1580 355 5 0.8 9928 2232 6382 1435 4787 1076 3.83 4.47 2553 574 NOTE: Overtorquing rod bolts 20% places stress on the threads in a NEW aluminum rod. For Cold-Formed U-Bolts which have been torqued to a set preload are recommended to be re-torqued after a short time to take up the stretch in the set of the material. www.brightonbest.co.uk • the web site where it happens PAGE3 … 210: 341: M20 x 2.5. M16 10.9 280 Nm (ft. 25 Nm . Bolt Diameter (mm) Recommended Torque (Nm) Class 8.8 Determining the correct torque can however present problems. U-Bolts that have been well lubricated with an anti-seize compound will have a torque range between plated and unplated values. torque values for bolts greater than 1½ in. Considerations for Torque Settings. The below chart refers to usage in steel. The chart above is approximate values and have not been validated for accuracy. Torque for bus bar lugs is specified by lug size. Proper torque spec varies depending on the material, bolt grade or wether lubrication is used such as oil, wax, or anti-seize Always go to the manufacturer for proper torque specs if needed. The following torque values are suggested maximums based upon actual lab testing on clean and dry or near dry fasteners. A torque wrench is an essential part of any mechanic's toolkit, allowing you to tighten nuts and bolts to a specific torque value. Hydrogen Embrittlement of fasteners is an issue our ... Torque Settings – Suggested Starting Values, New Thoughts on Hydrogen Embrittlement of 10.9 Bolts, Guide to Thread Galling – Stainless Steel Fasteners. M16x1.5 thread M16x1.5 8.8 216 Nm (ft. bolting torque table 2 - astm 193 grade b7 and astm 193 grade b16 stud bolts. Torque Settings Suggested Starting Values The below estimated torque calculations are only offered as a guide. The use of washers is recommended to ensure correct even torque. Cone, half-dog, flat, oval, cup and self-locking cup points standard Use stainless for corrosive, cryo- US $21.63-$24.51 / Set. 2nd step, 60º . NEW - Component directly from stock. Working on your car means you have to torque parts up when you fit them. However it is a real challenge in construction industry to determine the torque for bolts. Various K Factors: Typical Steel Bolt: 0.20: Zinc-Plated: 0.20: Lubricated: 0.18: Cadmium-Plated: 0.16: Miscellaneous Data: Applied Load: tensile: lb Help. bolting torque table 2a - cold service astm a320 grade l7 stud bolts. lbs.) Values though 7/16-inch diameter are stated in inch-pounds: ½-inch and over are stated in foot-pounds. Cadmium or Zinc) applied to the stud threads. Torque values may also have to be reduced when the fastener is threaded into aluminum or brass. Preloads and tightening torque for Metric ISO countersunk head steel screws with hexagon socket head or similar heads. TORQUE-TENSION RELATIONSHIP FOR A307A, GRADE 5, 8 & 9 BOLTS Locknut Size Threads per inch Steel Hex Locknut Steel Hex Flange Nut Grade C FNL Grade 9 Grade F Grade G Clamp Load (lbs.) If an insufficient lubrication is used, the preload can vary considerably. The specific torque value should be determined based on the aluminum or brass material strength, fastener size, length of thread engagement, etc. It can therefore be seen that only something in the order of 10% effort is employed inducing axial load in the bolt. For other friction conditions, significant modifications may be required. lbs.) 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. This allows for proper tightness so bolts won't loosen later. Set Screws Socket Set Screws Alloy Steel Socket Set Screws Stainless Steel Half-dog or self-locking cup points only. 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 N.m 5000 P = bolt tension Newtons D = bolt dia. M12 X 1.5 Bolt 90Nm. ?should be used on all fasteners unless otherwise. Doing a bolt up to the specified torque should set the tension in the bolt to approximately 85% of the proof load given in the table on page 6. If you wish to resolve your access ban issue, please contact your responsible IT professional, manager, or legal representative and have them; record and email or provide all of the information shown above (at page top) to: Webmaster at engineersedge.com - replace the ( at ) with a @. Bolt Torque Calculator - Calculate required bolt torque; Improvised Torque Wrench - Improvised torque wrench with luggage scale; ISO 724 - Metric Threads - Dimensions of metric threads according ISO 724; Metric Bolt Head and Wrench Size - ANSI/SO, DIN and JIS bolts This may be due to joint misalignment or strain, or it may be that the PTFE flare face has suffered mechanical damage. The below estimated torque calculations are … M16x1.5 12.9 364 Nm (ft. Typical values for countersunk heads screws with hexagon/hexalobular socket or associated nut, friction coefficient µ = 0.14, Fine thread and course threads apply Always use a torque wrench when installing parts on your car! Lubrication added to a dry bolt will typically reduce the torque value 15-25%. Socket Set Screws Alloy Steel Socket Set Screws Stainless Steel Half-dog or self-locking cup points only. This, and all subsequent torquing, of bolts should be undertaken at ambient temperature. TIGHTENING TORQUE FOR CLASS 8.8 BOLTS (METRIC COARSE) BOLT DIAMETER X PITCH THREAD STRESS AREA mm2 TIGHTENING TORQUE … Shear bolts are designed to fail under predetermined loads. Bolt Diameter x Pitch Thread Stress Area mm 2 *When μ = 0.10 Results in: *When μ = 0.14 Results in: Tightening Torque Nm Pre-load kN Tightening Torque Nm If higher property class fasteners are used, these should only be tightened to the strength of the original. All the above values are general guidelines. K Factor is a torque coefficient between bolt and receptacle. Tightening Torque min max min max min max min max Coarse Thread Series 1/4 20 2864 … A wide variety of torque wrench for m16 m20 m22 bolt options are available to you, such as max torque capacity, material, and jaw capacity. Note 3 - Overtorque 20%, loosen below torque value and retorque to final torque value. M14 X 1.75 Bolt 110Nm Importance of Torque in Bussing A critical concept in understanding bus lug torque specifications is the fact that the pressure of the lug connection has more to do with lowering the resistance of the electrical connection than the size of the lug itself. To convert from N-m to ft-lbs, multiply N-m by 0.7375. bolting torque table 1 - astm a193 and astm a320 grade b8, cl2 stud bolts. Spring strut/Wheel spindle . lbs.) lbs.) Resolution may require a signed user agreement, verification on internal training, legal or executive personnel engagement. 2nd step, 90° Rear sub-frame in body (M12) 100 Nm . bolting torque table 1 - astm a193 and astm a320 grade b8, cl2 stud bolts. Check that gasket is … other bolting torque tables. The torque values given above are a guide; they may be exceeded by a value of 50% to effect a seal. Tightening Torque Clamp Load (lbs.) 48 ft-lbs. Ball joint in wheel spindle, aluminum from and incl. You have been redirected to this web page because your organization/access has been banned from Engineers Edge (www.engineersedge.com). Thread Coeff Friction Preload (Kn) Property class Tightening Torque (Nm) Property class Min Breaking Torque; A1-50 A2-70 A4-80 A1-50 A2-70 A4-80 A1-50 A1-70 The bolting standard will define whether the torque value is for a dry or lubricated stud/bolt thread. Torque settings. 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. Technically it is based on the applications. other bolting torque tables. Use of its content by anyone is the sole responsibility of that person and they assume all risk. Unauthorized files copied to your network or computer hard drive. Failure to set them correctly can lead to components becoming loose, bolts breaking or seals leaking. 1) Enter thread diameter nominal value in section Thread Size.Click on info button for more info. Print this page . The importance of correct bolt tightening cannot be over emphasized. 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