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Grades of Stud Bolts
Below a table with materials and grades for flanges, thread rods (bolts) and nuts, arranged on design temperature, flanges, thread rods and recommended nuts.
| DESIGN TEMP. | FLANGES | GRADE THREAD RODS | GRADE NUTS |
| -195° to 102°C | ASTM A182 Gr. F304, F304L, F316, F316L, F321, F347 | A320 Gr.B8 Class2 | A194 Gr.8A |
| -101° to -47°C | ASTM A350 Gr.LF3 | A320 Gr.L7 | A194 Gr.7 |
| -46° to -30°C | ASTM A350 Gr.LF2 | A320 Gr.L7 | A194 Gr.7 |
| -29° to 427°C | ASTM A105 | A193 Gr.B7 | A194 Gr.2H |
| 428° to 537°C | ASTM A182 Gr.F11, F22 | A193 Gr.B16 | A194 Gr.2H |
| 538° to 648°C | ASTM A182 Gr.F11, F22 | A193 Gr.B8 Class1 | A194 Gr.8A |
| 649° to 815°C | ASTM A182 Gr. F304H, F316H | A193 Gr.B8 Class1 | A194 Gr.8A |
| DESIGN TEMP. | FLG'S | GRADE THREAD RODS | GRADE NUTS |
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