ISO 3506-1 defines grades for stainless steel bolts, such as A2-70, A4-80, and A2-50, indicating different stainless steel types and strengths. Understanding these helps you choose bolts that match your application’s corrosion resistance and load requirements for reliable performance across industries. 

 

Big Bolt Nut provides a wide range of these stainless-steel bolts, ensuring you get the right grade for your specific needs.

 

Stainless Steel Bolts Made Simple: Key Facts about A2-70 and A4-70 Grades

 

ISO 3506-1 bolts come in different grades, like A2-70 and A4-70, each made for specific uses. The A2-70 bolts, made from 304 stainless steel, are strong and rust-resistant. A2-70 bolt use cases cover a wide range of industries like construction, automotive, marine, and industrial. If you need extra protection against harsh chemicals or salty environments, A4-70 bolts, made from 316 stainless steel, are the better choice. They last longer in tough conditions. Both types are built to handle heavy loads and keep things securely fastened, making them reliable options for many industries. Choosing the right bolt means better performance and peace of mind.
 

This small decision can make a big difference in how well your project holds up over time.

 

A2 vs A4 Stainless Steel Bolts: Which One Should You Choose?
 

A2 and A4 stainless steel bolts both offer corrosion resistance but differ in composition and strength. A2 bolts (304 grade) are made with chromium and nickel, suitable for general use with good corrosion resistance. A4 bolts (316 grade) include molybdenum, enhancing resistance to saltwater and chemicals, ideal for marine environments. In terms of strength, A2-70 bolts have a tensile strength of 700 MPa, while A4-80 corrosion resistant bolts are stronger with 800 MPa, making A4 the preferred choice for harsher conditions

 

ISO 3506-1 Bolts: A2 vs A4 ISO Bolt Material Comparison
 

ISO 3506-1 stainless steel bolts come in two common types: A2 and A4. The main difference is how well they resist corrosion and how strong they are.

A2 bolts are made from 304 stainless steel and have good rust resistance. They can handle a tensile strength of 700 MPa, making them perfect for everyday use in construction, cars, and general industries.
 

A4 bolts are tougher against corrosion because they have extra chromium and molybdenum. This makes them great for salty or harsh environments, like by the sea or in chemicals. They are also stronger, with a tensile strength around 800 MPa.
 

Unmatched Strength and Lasting Durability: Why ISO 3506-1 Bolts Are Your Ultimate Fastening Solution

 

ISO 3506-1 bolts offer reliable strength and excellent resistance to corrosion, making them ideal for many industries like construction and marine. With different grades tailored to various environments, these fasteners ensure your projects stay secure and last longer.

Choosing ISO 3506-1 means trusting in quality and durability every time. 

 

At Big Bolt Nut, we provide top-quality ISO 3506-1 bolts that meet stringent standards, ensuring your projects benefit from dependable performance and longevity.