
Screw nut
Details
Name  | Dimension ((mm)  | Screw thread  | Accuracy of thread  | Material  | Mechanical Requirement  | 
Draw-in bolts for generate-electricity–by-fumes machine  | φ28.5×470  | 1.125-12UNJF (MIL)  | 3A  | GH738 (waspaloy) High-temperature alloy steel GH738  (Imitate waspaloy)  | (Room-temperature)σb≥1205MPa σ0.2≥828MPa 538℃: σb≥1064MPa σ0.2≥720MPa 732℃(endurance) (axial stress) 515MPa,≥23h (Fracture time≥23h)  | 
| Nuts | S50×H25.4 | 3B  | |||
| Nuts | S50×H38 |