Bolt

Basic Introduction

Bolts are essential fasteners used for securing and assembling components that require reliable clamping strength and structural stability. Common types include hex bolts, carriage bolts, flange bolts, anchor bolts, U-bolts, eye bolts, and various custom bolts, making them widely used in machinery, steel structures, automotive parts, equipment installation, construction hardware, and industrial connections.

Flathead External Hex Bolt

Flathead external hex bolt are a core category of hex fasteners, distinguished by their low-profile

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Cylindrical Internal Hex Bolts

Cylindrical internal hex bolts are the premier choice for precision, high-strength fastening,

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Expansion Bolts

Product is specialized fasteners designed for secure fixing into masonry walls and concrete. The

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Hook Anchor Bolts

Hook anchor bolts, also known as foundation bolts or L-shaped/J-shaped anchor rods, are specialized

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U-bolts

U-bolts are versatile clamping fasteners with a distinctive U-shaped body and threaded legs. Their

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Round Head Carriage Bolt

Round head carriage bolts are traditional fasteners specifically designed for use with wood and

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Hexagonal Flange Bolts

Hexagonal flange bolts are advanced fasteners where the hex head and wide, load-distributing flange

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Applications

Steel structure and metal framework connections
Machinery and equipment assembly
Automotive parts and bracket fixing
Construction hardware and structural installation
Industrial supports and heavy-duty connections
Infrastructure and engineering component fastening

Key Technical Parameters Overview

Item	Details
Thread Size	M5–M30
Length Range	10–500 mm
Material	Carbon Steel / Alloy Steel / Stainless Steel 201 / 304 / 316
Strength Grade	4.8 / 8.8 / 10.9 / 12.9
Thread Type	Full Thread / Partial Thread / Fine Thread / Coarse Thread
Head Type	Hex Head / Flange Head / Carriage Head / Eye Bolt Type / U-Bolt Type
Surface Finish	Zinc Plated / Hot-Dip Galvanized / Black Oxide / Dacromet / Geomet
Coating Thickness	5–80 μm
Salt Spray Test	48–1000+ hours
Standards	DIN / ISO / GB / ASTM

Key Advantages

Wide Range of Bolt Types
Different bolt types can be supplied for structural fastening, equipment assembly, bracket installation, and project-based applications.

Standard and Custom Bolt Development
Standard bolts can be supplied for regular purchasing needs, while custom bolts can be developed according to drawings, samples, or special installation requirements.

Multiple Strength and Material Options
Material and strength grades can be matched according to load requirements, service conditions, and corrosion resistance targets.

Suitable for Structural and Industrial Use
Bolts can be used in machinery, steel structures, construction hardware, automotive parts, and other heavy-duty fastening applications.

Flexible Surface Protection Solutions
Different coating and surface treatment options can be selected according to indoor, outdoor, and corrosive service environments.

Clear Specification and Quality Control
Quality control focuses on dimensions, threads, tensile strength, hardness, torque performance, coating thickness, and salt spray performance for clearer specification matching and product selection.

Quality & Standards

Manufactured according to DIN, ISO, GB, and ASTM standards, with testing covering dimensions, threads, tensile strength, hardness, torque performance, coating thickness, and salt spray resistance to ensure the stability and consistency of different bolt products in structural and industrial applications.

As one of the leading bolt enterprises in China, we warmly welcome you to buy discount bolt for sale here from our factory. All customized products are with high quality and low price. If you have any enquiry about quotation, please feel free to email us.

bolt, Expansion Bolts, U-bolts

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Bolt

Basic Introduction

Flathead External Hex Bolt

Cylindrical Internal Hex Bolts

Expansion Bolts

Hook Anchor Bolts

U-bolts

Round Head Carriage Bolt

Hexagonal Flange Bolts

Applications

Quality & Standards