{"id":2433,"date":"2026-05-06T23:42:09","date_gmt":"2026-05-06T21:42:09","guid":{"rendered":"https:\/\/estampacionenfrio.com\/blog\/bolt-manufacturing-types-materials-and-industrial-process\/"},"modified":"2026-05-28T23:14:49","modified_gmt":"2026-05-28T21:14:49","slug":"bolt-manufacturing","status":"publish","type":"post","link":"https:\/\/estampacionenfrio.com\/en\/blog\/bolt-manufacturing\/","title":{"rendered":"Bolt manufacturing: types, materials and industrial process"},"content":{"rendered":"\n

Most failures in fastening systems do not occur at the moment of installation. They occur because a screw was used where a bolt was required, because the material was not suited to the environment, or because bolt manufacturing did not meet the tolerances the application demanded. <\/p>\n\n\n\n

This article covers what a bolt is, how it differs from a screw, what types exist, and how they are manufactured for industrial applications where the margin for error is zero.
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What is a bolt?
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A bolt is a metal fastening element consisting of a cylindrical shank with a head at one end and a thread at the other, designed to work together with a nut. It does not anchor into the base material: it passes through it and is tightened from both sides, allowing it to withstand high structural loads and resist tensile forces, shear, and vibration in high-demand industrial applications.
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When to choose a bolt and when to choose a screw?
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Bolts and screws are distinct fastening elements with specific functions. Choosing one over the other does not depend on the designer’s preference but on the actual conditions of the application: the type of load, the need for disassembly, the material of the parts being joined, and the demands of the assembly where they will be used. Using the wrong element does not only compromise the joint, it can invalidate the entire design.
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Criterion<\/th>Bolt<\/th>Screw<\/th><\/tr><\/thead>
Fixing mechanism<\/strong><\/td>Passes through the pieces, tightened with a nut<\/td>Anchored by threading directly into the material<\/td><\/tr>
Load type<\/strong><\/td>Tension, shear, intense vibration<\/td>Moderate axial load<\/td><\/tr>
Disassembly<\/strong><\/td>Frequent, without damaging the pieces<\/td>Limited, may deteriorate the thread in the material<\/td><\/tr>
Required access<\/strong><\/td>Both sides of the joint<\/td>One side only<\/td><\/tr>
Typical application<\/strong><\/td>Structures, heavy machinery, automotive
<\/td>		Light assemblies, electronics, carpentry<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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When a joint must withstand high loads, allow repeated disassembly or guarantee structural integrity under continuous vibration conditions, the bolt is the right choice. The screw works well for simpler joints where access from both sides is not possible or the load does not justify a more robust solution.
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Types of bolts we manufacture at LEMEC<\/h2>\n\n\n\n

There is no universal bolt. Each industrial application defines the geometry, material and tolerances of the component. At LEMEC we manufacture to drawing, which means the starting point is always the customer’s specification, not a standard catalogue. <\/p>\n\n\n\n

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Hex head bolts<\/h3>\n\n\n\n

The most widely used type in industrial applications. The head allows torque to be applied with standard tooling and withstands high structural loads. Manufactured in multiple alloys depending on the working environment. <\/p>\n<\/div>\n\n\n\n

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Ball bolts<\/h3>\n\n\n\n

Designed for articulated joints where angular movement must be absorbed without compromising the integrity of the fixing. Common in suspension systems, opening mechanisms and assemblies with controlled misalignment. <\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Bolts for hinges and opening systems<\/h3>\n\n\n\n

With specific geometries for mounting on industrial hinges, machinery doors and equipment access panels. Tight tolerances are required to guarantee correct rotation and durability of the assembly. <\/p>\n<\/div>\n\n\n\n

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Body bolts<\/h3>\n\n\n\n

Used in automotive structures where vibration resistance and dimensional repeatability are decisive. Manufactured in long runs by cold stamping. <\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Through bolts<\/h3>\n\n\n\n

No differentiated head, threaded at both ends. Common in industrial machinery and metal structures. <\/p>\n<\/div>\n\n\n\n

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All bolts manufactured at LEMEC are produced to drawing and customer specification, in the materials, tolerances and finishes each application requires. If your part does not fit a standard type, we manufacture the custom solution. <\/p>\n\n\n\n

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Need help?<\/strong><\/p>\n\n\n\n

Contact our technical office<\/strong> and tell us about your project.<\/p>\n\n\n\n

We will study your case and propose a solution to manufacture them.<\/p>\n\n\n\n

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Materials for bolt manufacturing<\/h2>\n\n\n\n

The material of a bolt determines its mechanical behaviour, environmental resistance and service life. At LEMEC we work with the main industrial metal alloys, selecting the material based on the real conditions of each application. <\/p>\n\n\n\n