Imperial Yield Loads

Yield Strength is the tension applied load at which a fastener experiences a specified amount of permanent deformation. In other words, the material has been stressed beyond its elastic limit and has entered its plastic zone.

Yield Load in kN x Rm

Thread Size

Major Diam

Stress Area

304 UNC and 316 UNC

5-40 3.175 5.14 2.30
6-32 3.505 5.86 2.63
8-32 4.166 9.04 4.05
10-24 4.826 11.31 5.07
1/4-20 6.350 20.50 9.19
5/16-18 7.938 33.80 15.15
3/8-16 9.525 50.00 22.41
7/16-14 11.112 68.60 30.75
1/2-13 12.700 91.50 41.02
9/16-12 14.288 117 52.45
5/8-11 15.875 146 65.45
3/4-10 19.050 216 67.03
7/8-9 22.225 298 92.48
1-8 25.400 391 121.34
1-1/8-7 28.575 492 152.69