ASTM A325M/A490M Type 1 Heavy Hex Bolts – High-Strength Fastening Solutions
You are here: Home » Fasteners » Bolt » ASTM A325M/A490M Type 1 Heavy Hex Bolts – High-Strength Fastening Solutions

loading

ASTM A325M/A490M Type 1 Heavy Hex Bolts – High-Strength Fastening Solutions

At Topbolt Metalworks, we manufacture and supply ASTM A325M/A490M Type 1 Heavy Hex Bolts, designed for structural applications requiring exceptional strength and durability. These bolts are widely used in construction, machinery, and heavy equipment due to their robust performance and adherence to international standards.
As a trusted supplier in the global fastener industry, we offer custom finishes, competitive prices, and timely delivery to ensure your project’s success.
Availability:
Quantity:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
kakao sharing button
snapchat sharing button
telegram sharing button
sharethis sharing button

Technical Specifications

Attribute

Details

Model No.

ASTM A325M/A490M Type 1 Heavy Hex Bolt

Material

Carbon Steel,Alloy Steel

Type

Hexagon Head

Grade/Class

A325M, A490M

Connection

Common Bolt

Thread

Full Thread or Half Thread

Finish

Plain,Black,Galvanized,H.D.G,Dacromet,Phosphate

Application

Machinery, Structural Construction

Package Sizes

28×28×12 cm, 27×25×14.5 cm, 29×21.5×15 cm

Standards

ASTM A325M,ASTM A490M

Certifications

ISO9001:2015

Trademark

NGL or Customization Available

Origin

Ningbo, Zhejiang, China

HS Code

7318150000




What Are Heavy Hex Bolts?

Heavy hex bolts are distinguished by their larger and thicker hexagonal heads compared to standard hex bolts. This design provides enhanced strength and durability, making them ideal for heavy-duty applications like steel structures, bridges, and machinery.

Applications of Heavy Hex Bolts

  • Construction: Used in structural connections for bridges, buildings, and infrastructure projects.

  • Machinery: Provides secure fastening in industrial and agricultural equipment.

  • Oil & Gas Industry: Essential for high-stress connections in pipelines and rigs.




Why Choose ASTM A325M/A490M Heavy Hex Bolts?

Superior Strength

Manufactured from high-quality carbon steel, our bolts meet stringent ASTM A325M and A490M standards for tensile strength, making them suitable for critical applications.

Durable Finishes

Choose from zinc plating, black oxide, plain, or hot-dip galvanizing (H.D.G) to ensure optimal corrosion resistance and extended service life, even in harsh environments.

Versatility

Available in both full-threaded and half-threaded designs, these bolts offer flexibility for various fastening needs.

Compliance with International Standards

All our bolts adhere to ISO9001:2015, GB/T19001-2000, and ISO9001:2008 certifications, ensuring consistent quality and performance.




How Are Heavy Hex Bolts Manufactured?

Material Selection

We carefully select premium carbon steel to ensure the bolts meet required strength and durability standards.

Precision Forging

Using advanced machinery, the bolt heads are forged to precise hexagonal shapes, ensuring accurate dimensions and compatibility.

Thread Rolling

Threads are rolled (not cut) for superior strength and a smooth finish, reducing stress points.

Finishing Options

Bolts are coated with zinc plating, black oxide, or H.D.G for corrosion resistance, based on customer specifications.

Rigorous Quality Control

Each batch undergoes stringent testing for dimensions, tensile strength, and coating adhesion, ensuring adherence to ASTM standards.




Key Differences Between A325M and A490M Bolts

Feature

A325M Bolts

A490M Bolts

Material

Medium Carbon Steel

Alloy Steel

Strength

Lower tensile strength

Higher tensile strength

Finish Options

Zinc Plated, Galvanized

Plain, Black Oxide

Applications

Moderate load applications

High-stress applications




FAQ

What is the difference between a standard hex bolt and a heavy hex bolt?

The heavy hex bolt features a larger and thicker head than a standard hex bolt, providing greater strength and better distribution of load in high-stress environments.

Can I get custom sizes and finishes?

Yes, we provide customized heavy hex bolts tailored to your size, material, and finish requirements. Contact us with your specifications for a personalized solution.

What certifications do your heavy hex bolts have?

All our bolts comply with ISO9001 standards and ASTM specifications, ensuring premium quality and performance.




Contact Us for Reliable Heavy Hex Bolts

We're here to support your project with top-quality ASTM A325M/A490M heavy hex bolts, competitive pricing, and reliable service. Whether you need bulk orders, custom finishes, or technical advice, we've got you covered.

Reach out to Topbolt Metalworks today:

  • Sales Office: ROOM1-3, No.34 Building 5, Eastern Business Centre, Jiangdong District, Ningbo, China

  • Factory Location: Yuyan, Xiepu Chemical Industrial Zone, Zhenhai District, Ningbo, China

  • Tel: +86-574-86595122

  • Fax: +86-574-86657066

  • Email: sales2@topboltmfg.com

Let us be your trusted fastener manufacturer and supplier for all your heavy-duty applications.

Previous: 
Next: 

Quick Links

Fasteners

Contact Us

WhatsApp: +8618069043038
Telephone: +86-574-86595122
Phone: +86-18069043038
Email: sales2@topboltmfg.com
Address: Yuyan, Xiepu Chemical Industrial Zone, Zhenhai District, Ningbo, China

Join Our Newsletter

Promotions, new products and sales. Directly to your inbox.
Copyright ©  2024 Ningbo Topbolt Metalworks Co., Ltd. All Rights Reserved. Sitemap. Privacy Policy