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Some Statistics About Us You Must Know
Choose the plan that suits you best.
19
+
YEARS OF EXPERIENCE
3000㎡+
FLOOR SPACE
160
+
MACHINERY EQUIPMENT
3500
+
SATISFIED CUSTOMERS
Purchasing Guide, a source manufacturer with 19 years of experience in fastener production, specializes in the mass production and customization of long, high-strength, and corrosion-resistant bolts, providing global customers with stable, traceable, and internationally compliant fastening solutions.
The Hex Flanged Head Long Bolt is a high-strength fastener with an integrated hexagonal head and flange gasket design, widely used in automotive parts, energy storage systems, heavy equipment, and structural connections. The flange head design effectively distributes locking pressure, reducing the risk of loosening, and exhibits particularly stable performance in high-load, high-vibration environments.
Product Picture




Hex flanged head long bolt
Material: 1035 steel, SCM435 steel, 45k steel, zinc nickel plating
Surface finish: Decomate coating, zinc flake coating
Salt spray time: Over 1000 hours of medium salt spray testing, without red rust
Head type: Hex Flanged Head
Thread: m3, m4, m5, m6, m8, m10, 8-32, 10-24, 1/4-20, 5/16-18, 3/8-16
Max length: 600 mm
Application: Automobile parts, energy storage
Thread Feature:Half threaded, partially threaded
Product features
1. Integrated flange design, with stronger anti-loosening performance
The hexagonal flange head structure can be:
Evenly disperse the locking stress
Reduce the risk of loosening in a vibrating environment
Improve the overall connection stability
In automobiles and energy storage devices, reliability is directly related to system safety.
2. Ultra-long size manufacturing capacity, meeting the requirements of complex structures
We can stably produce 600mm long hexagonal flange head bolts
High straightness
Good thread consistency
The heat treatment and surface treatment are uniform
3. Highly corrosion-resistant solution, suitable for harsh environments
By zinc sheet coating/Decomet coating:
Effectively prevent red rust
Adapt to environments with high humidity, high salt spray and high temperature differences
Extend the service life of products and reduce maintenance costs
4. Multiple materials and standards are available for selection, suitable for the global market
Support
Various steel systems
Metric and imperial systems run in parallel
Different national standards
It is particularly suitable for export-oriented customers, cross-border projects, and OEM supporting procurement.
Production Process










Quality Control









Ready to Source Reliable Hex Flanged Head Long Bolts?
Whether you are looking for standard hex flanged head long bolts or fully customized solutions, our factory is ready to support your project.
FAQ
Q1: Can you provide customHex flanged head long bolt?
A1: It can be made according to the drawings and specifications provided by customers.
Q2: What is the Max length of the extra long screw you can produce?
A2: Max length we can do is 600mm.
Q3: What's color is zinc nickel plating available?
A3: Zinc nickle can be self color and black color.
Q4: How can we pay our order?
A4: We accept payment by TT,paypal, Alibaba trade assurance order, and Made in China platform order.
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