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High-Quality A4-80 Stainless Steel Fasteners Supplied by Haihao Group

High-Quality A4-80 Stainless Steel Fasteners Supplied by Haihao Group

When it comes to ensuring secure, long-lasting connections in demanding environments, high-quality stainless steel fasteners are essential. Haihao Group recently supplied a comprehensive batch of A4-80 stainless steel fasteners for a domestic customer, covering a wide range of bolt, nut, and washer types in accordance with international standards such as DIN, ISO, and ASME.

ASTM A36 structural steel-bolts and nuts-pipeline products

ASTM A36 structural steel-bolts and nuts-pipeline products

Why Choose A4-80 Stainless Steel Fasteners?

A4-80 is a high-strength stainless steel grade containing molybdenum (typically Type 316), offering excellent resistance to corrosion, especially in marine and chemical environments. With a minimum tensile strength of 800 MPa, A4-80 fasteners are ideal for high-stress, outdoor, and offshore applications.

Key Benefits:

Superior corrosion resistance (ideal for saltwater and chemical exposure)

High tensile strength

Excellent performance in extreme temperatures

Compliance with international DIN/ISO standards

Fasteners Delivered by Haihao Group

Here’s a breakdown of some of the key components provided:

Hex Head Bolts – DIN 933 & DIN 931 (Full and Partial Thread)

Sizes: M5 to M12

Material: A4-80 Stainless Steel

These bolts are commonly used in structural and mechanical assemblies. Their full or partial threading allows for strong and adjustable fastening.

Hex Socket Head Cap Screws – DIN 912

Sizes: M6 to M20

Features: High torque capability and space-saving installation

Perfect for machinery where recessed heads are needed, these bolts provide clean aesthetics and powerful tightening.

Hex Lock Nuts & Standard Nuts – DIN 934, DIN 439, ISO 10511

Sizes: M5 to M16

Material: A4-80

Use Case: Locking applications, anti-vibration environments

Washers – DIN 125, DIN 9021, DIN 128

Types: Flat washers, spring lock washers

Applications: Distributing load, preventing loosening

Special Components for Niche Requirements

Eye Bolts DIN 580 – for lifting and rigging

Grease Nipples DIN 71412 – for lubrication systems

Circlips DIN 471 – for shaft retention

Clevis Pins ISO 2341 – for mechanical joints

Plugs DIN 908 – for sealing tapped holes

Split Pins ISO 1234 – for locking nut assemblies

W-Clips & Fastening Accessories – including custom 316L components

Applications of Haihao Group Fasteners

Haihao Group’s A4-80 fasteners are ideal for:

  • Marine equipment
  • Petrochemical plants
  • Food processing machinery
  • Pharmaceutical industry
  • Renewable energy systems
  • Heavy-duty mechanical assemblies

With precision manufacturing, reliable quality control, and compliance with DIN, ISO, and ASME standards, our fasteners deliver both performance and durability.

Why Work With Haihao Group?

As a leading supplier of industrial piping and fastening solutions, Haihao Group combines:

  • Over 40 years of manufacturing experience
  • Global export capabilities
  • Full traceability (MTCs, dimensional reports, NDT as needed)
  • Competitive pricing with quick lead times

If you’re sourcing high-quality A4-80 stainless steel fasteners for your next project, contact Haihao Group today to get a reliable solution tailored to your needs. Email:sales@haihaogroup.com

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