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Standard Threaded Stud Load Strengths

Standard Mild Steel Arc Welding Studs - Mechanical Properties

 

Stud Diameter/Thread

Max Shear* (Lbs) Yield Load (Lbs) Ultimate Load (Lbs) Yield Torque (Ft Lbs)** Ultimate Torque (Ft Lbs)** Recommended Tightening Torque (Ft Lbs)***
10-24 746 830 1030 2.8 3 2
1/4-20 1390 1550 1900 6 7 5
5/16-18 2300 2560 3190 13 15 12
3/8-16 3400 3800 4700 24 27 21
7/16-14 4650 5200 6400 38 42 33
1/2-13 6200 6900 8650 59 65 51
5/8-11 9900 11000 13780 118 130 101
3/4-10 14600 16300 20300 209 230 189
7/8-9 20200 22600 28100 337 370 288
1-8 26600 29600 36900 505 555

432

Steel Properties: Min Tensile Strength 61,000 psi, Min Yield Strength: 49,000 psi

*Shear strength here represents results when the stud is subjected to pure shear without any bending moment present.

**Note that many variables affect the torque results such as steel strength, thread finish, lubrication, washers and hardness.

***Recommended tightening torque data represents 75% of the yield torque figures

Standard Stainless Steel Arc Welding Studs - Mechanical Properties

 

Stud Diameter/Thread

Max Shear* (Lbs) Yield Load (Lbs) Ultimate Load (Lbs) Yield Torque (Ft Lbs)** Ultimate Torque (Ft Lbs)** Recommended Tightening Torque (Ft Lbs)***
10-24 850 590 1180 2 2.9 1.42
1/4-20 1600 1100 2220 4.3 7 3.5
5/16-18 2640 1830 3660 9 14 7
3/8-16 3900 2700 5400 17 27 13
7/16-14 5350 3700 7440 27 44 20
1/2-13 7150 4950 9900 42 66 32
5/8-11 11300 7900 15800 84 135 64
3/4-10 16800 11600 23300 148 230 111
7/8-9 23200 16199 32300 241 387 181
1-8 30500 21200 42400 361 580

271

Steel Properties: Min Tensile Strength 70,000 psi, Min Yield Strength: 35,000 psi

*Shear strength here represents results when the stud is subjected to pure shear without any bending moment present.

**Note that many variables affect the torque results such as steel strength, thread finish, lubrication, washers and hardness and the high elongation typical in annealed stainless steel.

***Recommended tightening torque data represents 75% of the yield torque figures