Use the following Torque Calculator for ASTM A193 B7 and ASTM A320 L7 bolting, as specified in API 6A, 16A and 17D for flanges. TPI for 1" and smaller are UNC, 1-1/8" and larger are 8UN. Some flanges can be over-tightened to the point that the ring groove or the flange can be damaged. Bolt Tightening - Tohnichi Your Torque PartnerBolt Tightening 2 Bolt Tightening 2-1 Various Tightening Methods Various tightening methods 34 2-2 Screw and Torque Relation formula between screw and torque 35 2-3 Torque Coefficient 1 Formula of torque coefficient 36 2 The torque coefficient is not stable 36 3 Even when the torque is stable, axial tension may vary 36
Bolt Torque Calculator - Determining Proper Torque to Bolt . Excel Details:P = 85,000 x .3382. P= 28,747 lb. And finally, the torque value for this bolt can be. T = .2 x 3/4 x 28,747. T = 4,312 in. - lb. In many ways, Bayou City Bolt is like the bolts we sell:built with integrity, completely reliable, and a fundamental part of operational Bolt Torque Chart - repairengineeringBolt Torque Calculation. The relationship between bolt torque and its corresponding pre-load force (tension) is given in the following formula T = K F i d ; where:T = Torque required to create a desired bolt pre-load (in-lb) K = Nut "K Factor" (dimensionless) F Bolt Torque, Axial Clamp Force, Bolt Diameter Calculator 1) Enter known number values (two inputs minimum) within center located input boxes. 2) Select associated lower button to calculate unknown value. Note:This calculator initially assumes dry and perfect threads made from steel and/or zinc plated. Calculated values are approximate.
Dec 17, 2011 · Bolt Torque Torque is the turning force measured in foot-pounds (ft-lb) or inch-pounds (in-lb) applied to tighten (turn) the nut on a bolt. Torque can be measured during flange assembly with a properly calibrated torque wrench. In a bolted flange, the applied torque generates the axial load in What is the Nut Factor and How Does it Affect Torque?where T is the torque measurement, K is the nut factor, F is the tension and D is the bolt diameter. With this equation, if you know K, F and D, you can multiply them to get the torque needed to tighten the bolt so that it has the right amount of tension.Torque Calculator FastenalThese 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. For other applications or questions, email [email protected] Expand All.