Bolt SizeTPIProof Load (lbs) 1Clamp Load (lbs) 2Tightening Torque (ft lbs) PlainLubricated 1⁄4 20 3,800 2,850 12 6 5⁄16 18 6,300 4,725 25 12 3⁄8 16 9,300 6,975 44 22 7⁄16 14 12,750 9,563 70 35 1⁄2 13 17,050 12,788 107 53 9⁄16 12 21,850 16,...
Bolt torque chart reference guides include Grade 2, B7, A307, A325, Grade 8, A490, and Grade 5. AFT Fasteners is your trusted source for fastener information.
Metric fine thread Bolt torque chart Trapezoidal thread Cabel gland Trapezoidal thread (technical data) Overview of technical data for metric threads Metric thread - tightening torque Metric thread - pitch Metric thread - tap drill chart Metric thread - clearance hole chart Metric fine th...
was used to provide the chart's values, but it must be understood that every bolted joint is unique and the optimum tightening torque should be determined for each application by careful experimentation.A properly tightened bolt is one that is stretched such that it acts like ...
SeeTorque Force Design Equationswebpage and torque chart page for recommended fastener torque and equation data. This calculator uses a practical starting point for all threaded fastener tightening analysis and uses the basic elastic torque-tension equation. ...
It's important to refer to a specific torque chart because the exact value varies with the bolt's grade and the material it's fastening. Always use the correct specification for safety and effectiveness. What is the ISO standard for tightening torque? The ISO standard for tightening torque ref...
Fastener Relation Between Torque, Thread Pitch and Clamping Force Formula and Calculator Relationship between the applied tightening torque and bolt preload Ff Equation 1 T = Ff· { d2/ 2 ( µ / cosα + tanβ ) + µndn/ 2 }
(nut face or bolt head). This is illustrated in the piechart shown above. Relatively small changes in the nut face friction can have a significant effect on the bolt preload. As more torque is perhaps needed to overcome friction, less remains for the bolt extension and hence as the effect...
18-8 Stainless Steel bolts have a tightening torque specification of 132 in/lbs. Our DX Engineering Genius Clamps, Super Duty Saddle Clamps, Heavy Duty Saddle Clamps and Resin Support Blocks are superior products. Use DX Engineering Hex Bolt Hardware Sets as the proper high-quality companion hard...
specified.In this first example, the tightening torque for a M12 flange headed bolt is required. The bolt and nut are Dacromet coated.The bolt head is to be tightened and the clearance hole of the washer next to the head is 14.5 mm.A bolt of property class 10.9 is to be used.