{"id":7674,"date":"2025-10-31T10:22:15","date_gmt":"2025-10-31T10:22:15","guid":{"rendered":"https:\/\/www.raxpower.com\/?page_id=7674"},"modified":"2026-08-12T14:26:40","modified_gmt":"2026-08-12T14:26:40","slug":"%d8%a8%d8%b1%d8%ba%d9%8a-%d9%85%d8%b2%d8%af%d9%88%d8%ac-%d8%a7%d9%84%d8%b7%d8%b1%d9%81%d9%8a%d9%86","status":"publish","type":"page","link":"https:\/\/www.raxpower.com\/ar\/pole-line-fastener\/double-end-bolt\/","title":{"rendered":"\u0645\u0633\u0645\u0627\u0631 \u0630\u0648 \u0637\u0631\u0641\u064a\u0646"},"content":{"rendered":"
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Double End Bolt<\/h2>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>
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A double end bolt features threading on both ends with an unthreaded shank between them. This design accommodates nuts on either side for fastening components from both ends in flanges, valves, and structural assemblies. Both ends are chamfered to facilitate installation and alignment.<\/p>\n

The unthreaded center section maintains proper alignment, reduces bending stress, and ensures consistent performance under axial loads. Double end bolts provide uniform load distribution and enhance sealing integrity in pressurized systems, making them suitable for environments with constant vibration, pressure, or heavy loads. Several types exist: equal threaded studs have identical thread lengths on both ends; unequal threaded variants feature longer threads on one end; tap end studs include a short thread for tapped holes and a longer thread for nuts; full threaded studs have threading along the entire length; reduced shank types have a smaller center diameter for weight reduction.<\/p>\n

Common materials include carbon steel for high strength and cost-effectiveness, stainless steel grades 304 and 316 for corrosion resistance, and alloy steels such as American Society for Testing and Materials (ASTM) A193 B7 for high-temperature and high-pressure applications. Manufacturing standards include ASTM A193, A194, and A320, Society of Automotive Engineers (SAE) J1102, International Organization for Standardization (ISO) 898-1, Deutsches Institut f\u00fcr Normung (DIN) specifications, and American Society of Mechanical Engineers (ASME) guidelines.<\/p>\n

Applications span construction, automotive assemblies, oil and gas flange connections, power generation plants, marine environments, and wind turbines. Specifications range from M12 to M64 diameter with Unified National Coarse (UNC), Unified National Fine (UNF), or metric threads, and finishes including zinc plating, hot-dip galvanizing, or polytetrafluoroethylene (PTFE) coating for enhanced durability.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div>