Studs
Stud bolts are fastening elements representing a rod with threads on both ends or along the entire length, designed to connect various components. Their primary purpose is to provide a strong, rigid, and durable connection, especially effective in areas with limited access. Stud bolts can withstand significant axial loads, making them widely used in equipment, flange assemblies, and other critical components.
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| Name | Diameter, d (mm) | Height nuts, m (mm) | Length, l (inch) | Length, l (mm) | Material | Size | Size (inch) | Standard | Steel grade | Thread type | Weight 1 pc (kg) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stud 2 1/4"-8UN-2A x 440mm, 2 nuts 2 1/4" ASME B18.31.2 / ASME B18.2.2 | 57.2 | 50.4 | 17 1/4" | 440 | black | — | 2 1/4" | ASME B18.31.2 | A193 Gr. B16 / A194 Gr. 7 | 8UN | 11.2 |
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| Stud 2 1/4"-8UN-2A x 440mm, 2 nuts 2 1/4" ASME B18.31.2 / ASME B18.2.2 | 57.2 | 50.4 | 17 1/4" | 440 | black | — | 2 1/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 7M | 8UN | 11.2 |
|
| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A193 Gr. B16 / A194 Gr. 2H | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A193 Gr. B7 / A194 Gr. 2H | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 2H | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 7L | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 2HM | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 7L | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 7 | 4UNC | 24.9 |
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| Stud 3 3/4"-4UNC-2A x 205mm, 2 nuts 3 3/4" ASME B18.31.2 / ASME B18.2.2 | 95.3 | 84.4 | 8" | 205 | black | — | 3 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 4 (replacement for Gr. 7) | 4UNC | 24.9 |
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