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Home / Products / Bolt / Hex Bolt / Hex Flange Bolt Without Serration
Hex Bolt

Hex Flange Bolt Without Serration

Product Overview
The Hex Flange Bolt without serration provides broad, even load distribution without damaging soft or finished surfaces.

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Zhejiang Chance & Union Import and Export Co., Ltd.
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Zhejiang Chance & Union Import and Export Co., Ltd.
Attributes
Zhejiang Chance & Union Import and Export Co., Ltd.

Key Features
Smooth, flat flange distributes clamping force evenly to protect delicate materials.
Integrated washer design reduces part count and speeds up installation.
Sizes range from metric (M5-M20) to imperial (#10-3/4") for versatile use.
Standard hex head enables secure torque application without surface marring.

Product Features
Zhejiang Chance & Union Import and Export Co., Ltd.
Grade  SAE Grade 5.8 / 8.8 / 10.9 / 12.9 (ISO 5.8/8.8/10.9/12.9 equivalent)
Size Range M5–M36 (custom sizes available)
Thread Type Metric (ISO metric thread) / UNC / UNF (customizable)
Standards DIN 931 / DIN 933 / ISO 4014 / ISO 4017 / ASTM A307 (switchable per request)
Heat Treatment Quenched and Tempered (Q&T)
Tensile Strength ≥ 500–1200 MPa (depends on grade)
Yield Strength ≥ 400–1080 MPa (depends on grade)
Hardness HRC 22–39 (grade-specific)
Head Style Hex Head (external hexagon)
Thread Class 6g (metric) / 2A / 3A (imperial)
Operating Temperature -40°C ~ 250°C
Material Carbon Steel / Alloy Steel / Stainless Steel 304 / 316
Surface Finish  Plain / Zinc Plated (blue/yellow/black) / Black Oxide / HDG / Dacromet
Matching Parts Hex Nuts (DIN 934), Flat Washers (DIN 125), Spring Washers (DIN 127)
Applications
Zhejiang Chance & Union Import and Export Co., Ltd.

Common Applications
Automotive frames, electronic assemblies, furniture manufacturing, and construction projects require even load distribution without surface damage.

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Zhejiang Chance & Union Import and Export Co., Ltd.
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Zhejiang Chance & Union Import and Export Co., Ltd.
Zhejiang Chance & Union Import and Export Co., Ltd.
About Us
Fastening Chances,
Strengthening Union
Specializes in high-strength fasteners. We offer bolts, nuts, washers, and custom parts made from stainless steel, alloy steel, and more, serving over 200 clients in 25 countries. With 20 years of industry experience, we provide tailored fastening solutions from R&D to mass production.
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Zhejiang Chance & Union Import and Export Co., Ltd.
Certifications & Honors
Zhejiang Chance & Union Import and Export Co., Ltd.
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Utility Model Patent Certificate
Latest News & Updates
Stay informed with the latest industry trends, company news, and product innovations.
Zhejiang Chance & Union Import and Export Co., Ltd.
2026-05-26
Rooted in Manufacturing Heritage, Domestic Fasteners Expand Globally Steadily
With more than 20 years of mature manufacturing experience, China's fastener sector has established a sound technical and service system. Manufacturers provide high-strength bolts, nuts, screws, washers, pins and various non-standard customized parts. A wide range of materials, including stainless steel, alloy steel, aluminum alloy, copper and special alloys are adopted, together with advanced technologies such as cold heading, hot forging and precision machining. The products are exported to over 25 countries worldwide and serve more than 200 overseas clients, playing an important role in the global supply chain.
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Zhejiang Chance & Union Import and Export Co., Ltd.
2026-05-26
One-stop Fastener Solutions Connect Chinese Manufacturing with Global Markets
The global industrial sector has raised higher requirements for comprehensive services of supporting components. The fastener industry has upgraded its service model to cover the whole process from R&D and sampling to mass production, delivering one-stop supporting solutions for overseas customers. Supported by solid technical strength and strict quality control, the industry supplies highly stable and adaptable products, responds efficiently to customized demands worldwide, and builds a solid bridge linking Chinese manufacturing to the global market.
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Zhejiang Chance & Union Import and Export Co., Ltd.
2026-05-26
Diversified Materials and Exquisite Craftsmanship Build Core Competitiveness for Export Fasteners
Material selection and processing technology are the core guarantees for fastener quality. Domestic manufacturers keep optimizing material systems, including common metals and special alloys, and improve production techniques such as cold heading, hot forging and machining to ensure product strength, precision and durability. Both standard parts and complex non-standard customized parts comply with international industrial standards. Superior quality helps Chinese fasteners continuously expand influence across the global market.
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Zhejiang Chance & Union Import and Export Co., Ltd.
2026-05-26
Rising Overseas Demand Drives Sound Development of Fastener Foreign Trade
As global manufacturing, infrastructure and machinery industries recover, international demand for industrial fasteners keeps rising. Leveraging long-term industry experience, mature production systems and comprehensive after-sales services, China’s fastener foreign trade sector continues to expand overseas markets. Products are sold to many regions around the world with a growing customer base. The industry maintains steady order growth, fully demonstrating the strong market vitality and comprehensive strength of Chinese industrial products.
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Zhejiang Chance & Union Import and Export Co., Ltd.