M8 DIN 7991 Countersunk Head Bolt

1.Lightweight and strong for high-performance applications.
2.Superior corrosion resistance in extreme environments.
3.Precision threading ensures secure and reliable fastening.
4.High-temperature tolerance for demanding industrial uses.
5.Custom designs available to meet specific requirements.
Product Description

M8 DIN 7991 Countersunk Head Bolt: High-Performance Fastening Solution

Product Introduction

The M8 DIN 7991 Countersunk Head Bolt is a high-performance fastening solution designed for precision applications that require both strength and a smooth, flush finish. These bolts are widely used in various industries, including aerospace, automotive, medical devices, and manufacturing, due to their robust construction and ability to withstand high-stress environments. Engineered to meet the stringent requirements of modern production processes, the M8 DIN 7991 bolts are an essential component for projects where reliability and precision are paramount.

Technical Specifications

The M8 DIN 7991 Countersunk Head Bolt is designed according to international standards and offers exceptional strength, corrosion resistance, and versatility. Below is a detailed breakdown of the technical specifications of these bolts:

Specification Value
Thread Size M8 (8mm diameter)
Head Type Countersunk
Standard DIN 7991
Material Stainless Steel, Carbon Steel, Alloy Steel, Titanium
Grade Stainless Steel: A2, A4; Alloy Steel: 8.8, 10.9, 12.9
Length Range 12mm to 100mm (custom lengths available)
Finish Plain, Zinc Plated, Black Oxide, Anodized
Tensile Strength Up to 1,000 MPa (depending on material and grade)
Corrosion Resistance High (especially in stainless steel and titanium variants)
Head Angle 90° (standard for countersunk bolts)

Production Grades and Standards:

  • USA: ASTM A574, ASTM F593, ASTM F835
  • Russia: GOST 7798-70 (similar to DIN 7991), GOST 24379-80
  • Japan: JIS B 1180 (equivalent to DIN 7991), JIS B 1181

M14 Titanium Wheel Nut M14 Titanium Wheel Nut M14 Titanium Wheel Nut M14 Titanium Wheel Nut
M14 Titanium Wheel Nut M14 Titanium Wheel Nut M14 Titanium Wheel Nut M14 Titanium Wheel Nut

Product Features (Key Features)

  1. Precise Fit: The countersunk head design allows for a flush finish, making these bolts ideal for applications where smooth surfaces are essential.
  2. Corrosion Resistance: Available in stainless steel, titanium, and other high-quality materials, these bolts offer superior resistance to rust, corrosion, and oxidation.
  3. High Strength: With tensile strengths of up to 1,000 MPa, the M8 DIN 7991 bolts can handle high-pressure environments, making them suitable for demanding applications.
  4. Versatile Applications: These bolts are used in a wide range of industries, from aerospace to chemical processing, offering flexibility and reliability for various types of fastening.
  5. Customizable Lengths: Custom lengths can be ordered to meet specific project needs, ensuring the perfect fit for your application.

Applications

The M8 DIN 7991 Countersunk Head Bolt is used in numerous industries that require durable and reliable fasteners. Some key applications include:

  • Aerospace: Aircraft and spacecraft components where precision and high strength are essential.
  • Medical Devices: Surgical instruments and implants requiring biocompatibility and corrosion resistance.
  • Chemical Processing: Used in harsh chemical environments for reactors, pipes, and storage tanks.
  • Energy Sector: Ideal for components in nuclear, wind, and solar energy industries.
  • Marine Engineering: Essential for offshore structures, shipbuilding, and underwater equipment due to their resistance to saltwater corrosion.
  • Industrial Manufacturing: Common in production lines and assembly processes where strong and secure fastening is needed.

Manufacturing Process

At Baoji Haiyue, we adhere to the highest standards of production to ensure that every M8 DIN 7991 Countersunk Head Bolt meets or exceeds industry expectations:

  1. Material Selection: We source premium materials like stainless steel, titanium, and high-strength alloys.
  2. Precision Forging and Machining: Advanced forging presses and CNC machinery ensure each bolt is crafted with precision.
  3. Surface Treatment: Depending on the material, surface finishes like zinc plating or anodizing are applied to improve corrosion resistance and durability.
  4. Testing: Every batch undergoes rigorous testing, including ultrasonic and eddy current inspection, to guarantee strength, integrity, and compliance with international standards.

Quality Assurance

Baoji Haiyue maintains a comprehensive quality management system, ensuring each M8 DIN 7991 Countersunk Head Bolt meets the highest standards. Our testing procedures include:

  • Tensile Strength Testing: To ensure the bolts can handle high-stress applications.
  • Corrosion Resistance Testing: Verifying the bolts' resistance to various environmental factors, including saltwater and acidic environments.
  • Dimensional Inspection: Every bolt is measured to ensure it meets the exact specifications for a precise fit.

We are ISO 9001:2015 certified and adhere to other international quality standards like ASTM and ASME.

Packaging and Logistics

We prioritize safe and efficient packaging to ensure that the M8 DIN 7991 Countersunk Head Bolts arrive at their destination in perfect condition:

  • Packaging Options: Custom packaging available based on order size, with options for bulk or individual packaging.
  • Global Shipping: We offer worldwide shipping, with reliable logistics partners to ensure timely delivery.
  • Inventory Management: With our large-scale production capacity, we can handle both small and bulk orders, ensuring availability when you need it most.

Customer Support

At Baoji Haiyue, customer satisfaction is our priority. We offer:

  • Dedicated Support Team: Our expert team is available to assist with product inquiries, technical support, and after-sales service.
  • Consultations: We provide free consultations to help you choose the right material and specification for your application.
  • Warranty: All our products come with a warranty to ensure complete satisfaction.

Why Choose Us?

  • Complete Product Range: We offer a full spectrum of fasteners and materials, providing one-stop solutions for your needs.
  • Customization: We can manufacture bolts to your exact specifications, ensuring they fit perfectly into your production process.
  • Fast Delivery: Our efficient manufacturing and logistics network ensures quick turnaround times.
  • Global Reach: We serve customers worldwide, offering reliable international shipping and door-to-door service.
  • Reputation: With over a decade of experience, we have built a strong reputation for quality, reliability, and customer satisfaction.

Development History

 
2010


Company founded in Baoji, "Titanium Valley," specializing in titanium and non-ferrous metals.

 
2012

Expanded product range to include zirconium, tantalum, nickel, tungsten, and molybdenum products.

 
2014

Achieved ISO9001:2015 certification, ensuring high-quality production standards.

 
2016

Upgraded manufacturing facilities, adding VAR furnaces, CNC machinery, and advanced heat treatment systems.

 
2018

Expanded global presence, establishing partnerships in the United States, Germany, and South Korea.

 
2020

Obtained AS9100D certification for aerospace industry compliance and advanced product quality.

 
2022

Introduced customized solutions for the aerospace, medical, and energy industries, enhancing global reach.

 
2024

Celebrated 14 years of excellence with over 2,000 tons of annual titanium production capacity.

 

Product Quality Management

Appearance and size inspection
Appearance and size inspection
Tensile test
Tensile test
Bending test
Bending test
Chemical composition analysis
Chemical composition analysis
Electrochemical performance test
Electrochemical performance test
Ultrasonic test
Ultrasonic test
Eddy current test
Eddy current test
Thickness test
Thickness test

Production and Processing

Titanium sponge raw materials
Titanium sponge raw materials
Titanium sponge processing and smelting
Titanium sponge processing and smelting
Titanium ingot forging
Titanium ingot forging
Machining
Machining
Manual grinding and polishing
Manual grinding and polishing
Manual testing
Manual testing

Workshop and Equipment

Workshop and equipment
Workshop and equipment
 
Workshop and equipment
 
Workshop and equipment
Workshop and equipment
Workshop and equipment
 
Workshop and equipment
 
Workshop and equipment
 
Workshop and equipment
 
Workshop and equipment
 

Packaging

Packaging
 
Packaging
 
Packaging
 
Packaging

Main Products

Titanium Anode
Titanium Anode
sinrer-metal-powder-filters
Sinrer-metal-powder-filters
Titanium Rod
 
Titanium Rod
Titanium Plate
Titanium Plate
Titanium Elbow
Titanium Elbow
TItanium Screw
Titanium Screw

Applied Industries

Be used in a wide range of industries.

 

Electrolytic copper foil manufacturing industry

Electrolytic copper foil manufacturing industry

Hydrometallurgy industry

Hydrometallurgy industry

Sewage treatment industry

Sewage treatment industry

Cyclone electrolysis industry

Cyclone electrolysis industry

Etching liquid electrolysis recovery industry

Etching liquid electrolysis recovery industry

Electrolytic sodium hypochlorite industry

Electrolytic sodium hypochlorite industry

OEM Services

We provide OEM services for customers requiring custom solutions tailored to their specific needs. Whether it's material, size, or finish, we work closely with you to create the perfect product for your application.

Frequently Asked Questions (FAQs)

  1. What materials are available for M8 DIN 7991 Countersunk Head Bolts?

    • We offer stainless steel, titanium, alloy steel, and carbon steel variants.
  2. Can I get customized lengths for the bolts?

    • Yes, we can manufacture M8 DIN 7991 bolts in various lengths based on your requirements.
  3. What is the tensile strength of these bolts?

    • The tensile strength can go up to 1,000 MPa, depending on the material and grade.
  4. Do you offer international shipping?

    • Yes, we provide worldwide shipping to ensure you receive your order wherever you are located.

Contact Details

For more information or to request a quote, feel free to contact us:

Get in touch today for high-quality, reliable M8 DIN 7991 Countersunk Head Bolts that meet your exact needs!


This page is designed to help you make an informed decision about purchasing M8 DIN 7991 Countersunk Head Bolts, providing valuable insights that align with your industry requirements and purchasing behavior.

Online Message

Learn about our latest products and discounts through SMS or email