Bolts Manufacturers

A bolt manufacturer is a company that produces bolts, which are a type of fastener consisting of a head and a threaded shaft. Bolts are used to hold objects together by being inserted through holes in the objects and then being tightened using a nut. Bolts can be made from a variety of materials, including steel, stainless steel, brass, and aluminum. Bolt manufacturers often produce a range of different types of bolts, including hex bolts, carriage bolts, eye bolts, and more, to meet the needs of various industries and applications. They may also produce other types of fasteners, such as screws and nuts, to complete the fastening assembly.

3. What are types of bolts?

There are many types of bolts, including:

Hex bolts: hexagonal shaped head and full threading along the shank.

Carriage bolts: rounded head and a square neck to prevent turning.

Eye bolts: looped bolt with a threaded shaft, used for attaching cables or ropes.

Lag bolts: heavy-duty bolts with large, pointed heads for use in wood.

Machine bolts: square or hex head, used with a nut to secure metal to metal.

U-bolts: U-shaped bolts with threaded ends, used for clamping pipes or attaching machinery.

T-bolts: T-shaped head with a threaded shaft, used for clamping in T-slots.

Structural bolts: high-strength bolts designed for use in construction and engineering applications.

Flange bolts: bolts with a flange head, used in applications where a wide bearing surface is needed.

Plow bolts: short bolts with a square head, used in farm and plow machinery.

4. What are the quality standards for bolts?

Bolts are subject to various quality standards, depending on the intended application and location. Some common quality standards for bolts include:

ISO 898: International standards for mechanical properties of fasteners.

ASTM A325/A490: American Society for Testing and Materials standards for structural bolts.

SAE J429: Society of Automotive Engineers standards for grade markings of bolts.

DIN 933/931: German Institute for Standardization standards for hexagonal screws and bolts.

ASME B18.2.1: American Society of Mechanical Engineers standards for square and hex bolts and screws.

EN 14399: European standards for high-strength structural bolting assemblies.

BS EN ISO 898-1: British standards for mechanical properties of fasteners.

It’s important for bolt manufacturers to comply with the appropriate quality standards to ensure their bolts meet the necessary strength and performance requirements for various applications. End-users should verify that the bolts they purchase comply with the appropriate standards to ensure they meet their requirements.

1. How to find best bolts manufacturers?

To find the best bolt manufacturers, you can consider the following factors:


Look for manufacturers that comply with industry standards and have a history of producing high-quality products.

Product Range:

Consider manufacturers that offer a wide range of bolt types and sizes to meet your specific needs.

Delivery Lead Time:

Choose manufacturers that have a fast turnaround time and are able to meet your delivery requirements.


Compare prices from multiple manufacturers to ensure you’re getting a fair and competitive price.


Look for manufacturers with a good reputation in the industry, as evidenced by customer testimonials, certifications, and awards.

Customer Support:

Choose manufacturers that offer excellent customer support and are willing to help with any questions or issues you may have.


Consider manufacturers that are located close to you to minimize shipping costs and delivery time.

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