{"id":1188,"date":"2025-03-10T15:58:30","date_gmt":"2025-03-10T14:58:30","guid":{"rendered":"https:\/\/www.efsfasteners.com\/products\/special-bolts\/"},"modified":"2026-07-17T15:19:38","modified_gmt":"2026-07-17T13:19:38","slug":"special-bolts","status":"publish","type":"page","link":"https:\/\/www.efsfasteners.com\/en\/products\/special-bolts\/","title":{"rendered":"Special Bolts"},"content":{"rendered":"

SPECIAL CUSTOM-MADE BOLTS<\/h1><\/div>

Custom Fasteners for Every Need<\/h2><\/div><\/div><\/div><\/div><\/div>

Special Bolts<\/h1><\/div>

Special fasteners<\/strong> include all fastening elements designed for applications where standard components are not sufficient to meet the technical requirements of the project. In the industrial sector, the choice of fastener does not depend solely on diameter and length, but also involves materials, property classes, surface treatments, machining operations, certifications and operating conditions.<\/p>\n

EFS supplies special fasteners for industrial automation systems, plant manufacturers, OEMs, maintenance operators and technical departments, coordinating the entire production process through a network of qualified Italian and European manufacturers. The objective is to manufacture reliable, traceable components that comply with the required specifications, even when the project involves non-standard geometries or high-performance materials.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Special Fastener Solutions<\/h2><\/div>

Every application has different requirements and calls for components designed according to the actual operating conditions. For this reason, EFS offers a range of solutions dedicated to the main fastening elements used in industry.<\/p>\n

Explore in detail the different product families, reference standards, available materials and main applications:<\/p>\n<\/div><\/div><\/div>

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SCREWS<\/h3><\/div><\/div><\/div>
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\"EFS<\/span><\/div>

NUTS<\/h3><\/div><\/div><\/div>
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\"EFS<\/span><\/div>

TECHNICAL WASHERS<\/h3><\/div><\/div><\/div>
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\"EFS<\/span><\/div>

STUD BOLTS AND THREADED COMPONENTS<\/h3><\/div><\/div><\/div><\/div><\/div>
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SPECIAL BOLTS<\/h3><\/div>
\"EFS<\/span><\/div>

Special bolts<\/strong> are manufactured according to customer specifications to ensure maximum compatibility with the required application. They can be produced with custom threads, dimensions and geometries,<\/strong> providing high mechanical strength and enhanced performance.<\/p>\n<\/div><\/div><\/div>

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STRUCTURAL BOLTS<\/h3><\/div>
\"EFS<\/span><\/div>

Used in construction and infrastructure applications, structural fasteners<\/strong> are designed to withstand high loads and provide resistance to mechanical fatigue<\/strong>. The materials used and surface treatments ensure long-term durability even in demanding environmental conditions.<\/p>\n<\/div><\/div><\/div>

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CUSTOM BOLTS TO DRAWING<\/h3><\/div>
\"EFS<\/span><\/div>

When standard solutions are not suitable, EFS manufactures custom fasteners<\/strong> based on technical drawings, tailoring every detail according to customer requirements. This approach makes it possible to produce fastening components with highly customized mechanical, dimensional and performance specifications.<\/strong><\/p>\n<\/div><\/div><\/div>

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DOWEL PINS<\/h3><\/div>
\"EFS<\/span><\/div>

Pins <\/strong>are used for the assembly of mechanical components<\/strong>, ensuring alignment and structural stability. Available in different configurations, they are essential for industrial and precision engineering applications.<\/p>\n<\/div><\/div><\/div>

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INDUSTRIAL FASTENERS KIT<\/h3><\/div>
\"Viti<\/span><\/div>

Kit supply consisting of bolts or stud bolts, nuts and washers intended for the same application and supplied in the quantities required by the order.<\/p>\n<\/div><\/div><\/div>

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OVERSIZE FASTENERS<\/h3><\/div>
\"EFS<\/span><\/div>

EFS supplies fasteners with non-standard dimensions<\/strong>, designed to meet specific application requirements. These fastening components go beyond the dimensional limits of standard fasteners<\/strong>, providing customized solutions even for demanding applications.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

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NEED A PARTNER FOR SPECIAL BOLTS?<\/h3><\/div>

We supply custom-designed fasteners for critical applications \u2014 with certified quality, full traceability, and technical support.
Fill out the contact form or call us: our team is ready to assist you with tailored solutions.<\/p>\n<\/div><\/div><\/div>

CONTACT US<\/span><\/a><\/div><\/div><\/div><\/div><\/div>\n

PRODUCTS APPLIED TO INDUSTRY<\/h3><\/div><\/div><\/div>
Special Screws for Lamellar Joints<\/span>Eufastersol Admin<\/a><\/span><\/span>
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MECHANICS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Special Screws for Lamellar Joints<\/a><\/h4>
MECHANICS<\/a><\/div><\/div><\/div>
Custom Threaded Studs for Nuclear Plants<\/span>Eufastersol Admin<\/a><\/span><\/span>
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ENERGY<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Custom Threaded Studs for Nuclear Plants<\/a><\/h4>
ENERGY<\/a><\/div><\/div><\/div>
Hexagonal Nut for Oil&Gas Industry<\/span>Eufastersol Admin<\/a><\/span><\/span>
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OIL & GAS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Hexagonal Nut for Oil&Gas Industry<\/a><\/h4>
OIL & GAS<\/a><\/div><\/div><\/div>
Specialty Hardware for the Port Crane Industry<\/span>Eufastersol Admin<\/a><\/span><\/span>
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CONSTRUCTION SITES AND LIFTING<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Specialty Hardware for the Port Crane Industry<\/a><\/h4>
CONSTRUCTION SITES AND LIFTING<\/a><\/div><\/div><\/div>
Rectangular head screws for industrial plants: a compact and effective solution<\/span>Eufastersol Admin<\/a><\/span><\/span>
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PLANTS<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Rectangular head screws for industrial plants: a compact and effective solution<\/a><\/h4>
PLANTS<\/a><\/div><\/div><\/div>
Lightened shank screws for rail transport<\/span>Eufastersol Admin<\/a><\/span><\/span>
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VEHICLES<\/a><\/div>\t\t\t\t\t\n\t\t\n\t\t\t\t\t\t<\/a>\n\t<\/div>\n<\/div>\n<\/div>\n

Lightened shank screws for rail transport<\/a><\/h4>
VEHICLES<\/a><\/div><\/div><\/div><\/div>
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DISCOVER THE APPLICATION SECTORS<\/span><\/a><\/div><\/div><\/div><\/div><\/div><\/div>\n

Standard and Made-to-Drawing Production<\/h2><\/div>

Not all applications require fully customized components. In many cases, it is possible to start from an ISO, DIN, UNI or ASTM standard and adapt the component to the needs of the project by modifying lengths, threads, materials or treatments.<\/p>\n

When the required characteristics fall outside the available standards, EFS coordinates the production of components manufactured entirely to drawing, ensuring dimensional continuity, raw material traceability and dedicated inspections throughout the entire production process.<\/p>\n<\/div><\/div><\/div>

Materials, Machining Operations and Treatments<\/h2><\/div>

The performance of a fastening element depends on the balance between design, material and production process. For this reason, each supply is evaluated by considering the actual operating conditions and the customer\u2019s specifications.<\/p>\n

EFS manages supplies in carbon steels, alloy steels, stainless steels, Duplex, Super Duplex, Inconel and other special alloys, also coordinating operations such as turning, grinding, thread rolling, milling, laser marking and surface treatments including zinc plating, Geomet\u00ae, electroless nickel plating and black oxide treatment.<\/p>\n<\/div><\/div><\/div>

Quality and Traceability<\/h2><\/div>

In the most demanding industrial applications, fastener quality does not depend solely on the material, but on the management of the entire order. For this reason, EFS coordinates dimensional inspections, documentation checks, mechanical testing and certifications required by the target sector.<\/p>\n

On request, EN 10204 3.1 and 3.2 certificates, destructive and non-destructive testing, dimensional inspections and full raw material traceability are available, ensuring supply conformity even for critical applications.<\/p>\n<\/div><\/div><\/div>

Why Choose EFS for Special Fasteners<\/h3><\/div>

Every project presents different criticalities: corrosive environments, high loads, extreme temperatures, non-standard components or particularly strict documentation requirements. EFS\u2019s experience lies in coordinating all stages of the supply process, from manufacturer selection through to delivery of the finished component, identifying each time the most suitable solution for the needs of the application.<\/p>\n

The approach is oriented towards collaboration with technical departments and purchasing managers, with the objective of ensuring repeatable supplies, certified materials and reliable procurement times.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

LEARN MORE ABOUT OUR FIXING SOLUTIONS<\/h4><\/div><\/div><\/div>