Chemical Requirements
| Element,% | Bolts | Nuts |
| heat-cast | heat-cast | |
| Carbon,min or range | 0.28-0.55 | 0.30-0.55 |
| Phosphorus,max | 0.030 | 0.04 |
| Sulfur,max | 0.050 | 0.06 |
Full-section tension test requirements
| Nominal Bolt Size,in.[mm] | Threads per inch | Stress Area,in.2[cm2] | Minimum Full-section Test Load,lbf[kn] |
| 7/8[22.2] | 9 | 0.462[2.98] | 50 800[226] |
| 15/16 [23.8] | 9 | 0.540[3.48] | 59 400[264] |
| 1 [5.4] | 8 | 0.606[3.96] | 66 600[296] |
| 1 1/6[27.0] | 8 | 0.659[4.48] | 76 400[340] |
| 1 1/8[28.6] | 7 | 0.763[4.92] | 83 900[373] |
Reduced-Section Tension Test Requirements
| Property | Minimum Requirement |
| Tensile strength,psi(MPa) | 110 000[760] |
| Yield point,psi(MPa) | 80 000[550] |
| Elongation in 2 in.or 50 mm,% | 12 |
| Reduction of area,% | 25 |
