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 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 7L | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 2HM | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 7L | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 7 | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7 / A194 Gr. 4 (replacement for Gr. 7) | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A193 Gr. B7M / A194 Gr. 2HM | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A193 Gr. B7 / A194 Gr. 7 | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A193 Gr. B16 / A194 Gr. 7 | 8UN | 14.4 |
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| Stud 2 3/4"-8UN-2A x 320mm, 2 nuts 2 3/4" ASME B18.31.2 / ASME B18.2.2 | 69.9 | 61.7 | 12 5/8" | 320 | black | — | 2 3/4" | ASME B18.31.2 | A320 Gr. L7M / A194 Gr. 7M | 8UN | 14.4 |
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| Stud M8x335 ASME B18.31.1M | 0 | 0 | — | 335 | black | M8 | — | ASME B18.31.1M | A193 Gr. B7M | — | 0.32 |
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Stud bolts of all sizes according to ASME standards. Selection by length and diameter, competitive pricing, and delivery to the destination point. Stud bolts are fastening elements in the form of cylindrical rods with external threads, used for reliable connection of structures under increased mechanical, thermal, and vibration loads. They are installed using nuts and washers, ensuring high assembly accuracy and allowing disassembly without loss of joint strength. All products are manufactured from carbon and alloy steels, as well as corrosion-resistant alloys such as Incoloy, Hastelloy, and Alloy grades. The products comply with international ASME and ASTM standards (for example, ASTM A193 for alloy steel stud bolts and ASTM A320 for low-temperature applications), ensuring reliability and long service life in operation.
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