Grade 8.8 Hex Bolt
There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatment (quenching, tempering).
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PRODUCT INTRODUCTION

Introduction:

 

Welcome to our product introduction for the Grade 8.8 Hex Bolt, manufactured and distributed by our company in China. As a leading producer of high-quality fasteners, we take pride in offering the most reliable and durable products to our customers around the world. Our Grade 8.8 Hex Bolt is one such example, renowned for its strength, precision, and versatility. In this article, we will describe the key features and benefits of our Grade 8.8 Hex Bolt and explain why it is an ideal choice for merchants seeking a superior fastening solution.

 

Key Features:

 

The Grade 8.8 Hex Bolt is a premium quality fastener that is designed to withstand heavy loads, high pressures, and extreme temperatures. Some of the key features of this bolt are as follows:

 

1. Material: The Grade 8.8 Hex Bolt is made from high-grade alloy steel, which gives it exceptional strength, toughness, and corrosion resistance.

 

2. Finish: The bolt is coated with a black oxide finish, which not only enhances the appearance of the bolt but also provides protection against rust and other forms of corrosion.

 

3. Shape: The hexagonal shape of the bolt head and the threaded shank ensure that the bolt can be securely tightened using a standard spanner or wrench.

 

4. Thread: The precision-machined threads of the Grade 8.8 Hex Bolt are uniform and strong, ensuring a tight and secure fit in the mating threads.

 

Benefits:

 

The Grade 8.8 Hex Bolt offers merchants a number of benefits over other conventional fasteners. Some of the key advantages are as follows:

 

1. Strength: The high tensile strength of the Grade 8.8 Hex Bolt makes it suitable for use in applications where heavy loads and high stresses are involved. The bolt can withstand forces up to 800 N/mm2.

 

2. Reliability: The precision-machined threads and hexagonal head of the bolt ensure that it can be tightened securely and correctly, minimizing the risk of loosening or failure.

 

3. Corrosion resistance: The black oxide coating of the bolt provides excellent protection against rust and other forms of corrosion, ensuring that it will last longer than other fasteners.

 

4. Versatility: The Grade 8.8 Hex Bolt is suitable for use in a wide range of applications, including construction, automotive, machinery, and industrial settings.

 

Applications:

 

The Grade 8.8 Hex Bolt is suitable for use in a variety of applications, where high strength, reliability, and performance are required. Here are some of the most common uses of this bolt:

 

1. Construction: The Grade 8.8 Hex Bolt is ideal for use in construction projects, where heavy loads and high stresses are involved. It can be used to secure structural elements, such as steel beams, columns, and trusses.

 

2. Automotive: The bolt is widely used in the automotive industry, where it is used to secure engine components, suspension systems, and other critical parts.

 

3. Machinery: The Grade 8.8 Hex Bolt is used in a variety of machinery applications, such as manufacturing equipment, industrial machinery, and power generation equipment.

 

4. Industrial: The bolt is also commonly used in industrial settings, where it can be used to secure heavy equipment, machinery, and other structures.

 

Conclusion:

 

If you are a merchant seeking a high-quality fastener that offers exceptional strength, reliability, and versatility, then the Grade 8.8 Hex Bolt is the ideal choice. We take pride in producing the best fasteners in the business, and we are confident that you will be satisfied with the performance of our Grade 8.8 Hex Bolt. Contact us today to learn more about our products and services, and to place your order for the Grade 8.8 Hex Bolt.

 

There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatment (quenching, tempering).  it is generally called high-strength hexagonal bolts, and the rest are generally called low carbon steel hexagonal bolts, or mild steel hex bolts. The bolt grade consists of two parts of numbers, which represent the nominal tensile strength value and yield ratio of the bolt grade respectively. E.g:

Grade 10.9 high-strength bolts, after heat treatment, can achieve:

1. The nominal tensile strength of the bolt material reaches 1000MPa;

2. The yield-strength ratio of the bolt material is 0.9;The nominal yield strength of the bolt material is 1000×0.9=900MPa

The bolt grade is an international standard. Jinrui has rich experience in producing these different grades of hexagonal bolts, but here we still want to remind everyone that although the higher the performance grade of hexagonal bolts, the better, but most basic fields only need grade 4.8 hex bolts. . Buying the right hex bolts at a reasonable price is what Jinrui has always advocated.

Production Process of Hex Bolts

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Specification of Grade 8.8 Hex Bolt

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d

1/4

5/16

3/8

7/16

1/2

5/8

3/4

7/8

1

ds

max

0.26

0.324

0.388

0.452

0.515

0.642

0.768

0.895

1.022

min

0.237

0.298

0.36

0.421

0.482

0.605

0.729

0.852

0.976

s

max

0.438

0.5

0.562

0.625

0.75

0.938

1.125

1.312

1.5

min

0.425

0.484

0.544

0.603

0.725

0.906

1.088

1.269

1.45

e

max

0.505

0.577

0.65

0.722

0.866

1.083

1.299

1.516

1.732

min

0.484

0.552

0.62

0.687

0.826

1.033

1.24

1.447

1.653

k

max

0.188

0.235

0.268

0.316

0.364

0.444

0.524

0.604

0.7

min

0.15

0.195

0.226

0.272

0.302

0.378

0.455

0.531

0.591

r

max

0.03

0.03

0.03

0.03

0.03

0.06

0.06

0.06

0.09

min

0.01

0.01

0.01

0.01

0.01

0.02

0.02

0.02

0.03

b

L≤6

0.75

0.875

1

1.125

1.25

1.5

1.75

2

2.25

L>6

1

1.125

1.25

1.375

1.5

1.75

2

2.25

2.5

d

1-1/8

1-1/4

1-3/8

1-1/2

1-5/8

1-3/4

1-7/8

2

2-1/4

ds

max

1.149

1.277

1.404

1.531

1.658

1.785

1.912

2.039

2.305

min

1.098

1.223

1.345

1.47

1.591

1.716

1.839

1.964

2.214

s

max

1.688

1.875

2.062

2.25

2.438

2.625

2.812

3

3.375

min

1.631

1.812

1.994

2.175

2.356

2.538

2.719

2.9

3.262

e

max

1.949

2.165

2.382

2.598

2.815

3.031

3.248

3.464

3.897

min

1.859

2.066

2.273

2.48

2.616

2.893

3.099

3.306

3.719

k

max

0.78

0.876

0.94

1.036

1.116

1.196

1.276

1.388

1.548

min

0.658

0.749

0.81

0.902

0.978

1.054

1.13

1.175

1.327

r

max

0.09

0.09

0.09

0.09

0.09

0.12

0.12

0.12

0.19

min

0.03

0.03

0.03

0.03

0.03

0.04

0.04

0.04

0.06

b

L≤6

2.5

2.75

3

3.25

3.5

3.75

4

4.25

4.75

L>6

2.75

3

3.25

3.5

3.75

4

4.25

4.5

5

Common Grade and Coating

Standard

Material

Grade

Finish

Thread

DIN933 DIN931 ISO4014 ISO4017 ASME B 18.2.1

carbon steel

4.6 4.8 5.8 8.8 10.9 12.9 A2-70 A4-70

Plain

UNC

Zinc plated

Alloy steel

Yellow zinc plated

PTFE

Stainless steel

Black Oxide

UNF

Dacromet

Other

HDG

Other

Application Area of Hex Bolts

High-strength hexagonal bolts of grade 8.8 or above are mainly suitable for important structures such as large-span houses, industrial plant steel structures, high-rise building steel frame structures, bridge structures, and heavy lifting machinery.

The common grade hex bolt and nut are widely used, such as the production, installation, maintenance, etc. of various mechanical equipment, electronic products, communication equipment, furniture equipment, construction and other industries, basically covering all industries, for The entire basic industrial facilities have played an important role.

Of course, in some specific locations in these fields, other products are also used, such as rail bolts, flange nuts, U-bolts, flat head hex bolts, T-bolts, round head square neck bolts and round head hex bolts.

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Why choose us?

  • We offer reliable shipping options to ensure timely delivery of our products.
  • We pay attention to customer needs, give full play to our platform advantages, and actively participate in the development and production of xx.
  • Our Hex Bolts are competitively priced without compromising on quality or reliability.
  • Grade 8.8 Hex Bolt has always regarded product quality and technology research and development as the fundamental development of the company.
  • Our Hex Bolts are tested and certified to meet industry standards and regulations.
  • We believe that a green office environment not only provides a healthy lifestyle for our employees, but also brings economic benefits to our company.
  • Our efficient production process allows us to offer fast turnaround times without compromising quality.
  • Our company has the ability to rapidly develop new products in terms of planning, structure, functions, and trial production.
  • Our extensive experience in the Hex Bolt industry allows us to offer expert advice and guidance.
  • We carry out the principle of prevention first, strengthen management and pay attention to actual results, so as to meet the needs of customers and provide good service.

FAQ

Q1:Can you send samples?
A1:Of course, we can provide samples and courier services to customers around the world.
Q2:What if I have no import experience?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.

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