A4-80 Stainless Steel Fastener is recognized by 2 ways, A4 which describe it as being from SS 316 family and 80 which classifies its strength. When we say A4-80 it generally means that the bolt / screw is from SS 316 grade and has an ultimate tensile strength as 80 kg or 800 n/mm2.

A4-80 Stainless Steel Bolts—High-Strength Fasteners for Industrial Use

A4-80 stainless steel bolts are designed for industries that demand high strength, corrosion resistance, and durability. These bolts are widely used in marine, construction, and chemical processing applications, where exposure to harsh environments is a critical pain point.

At Bigboltnut, we manufacture high-quality A4-80 bolts that meet ISO 3506-1 standards, ensuring superior fastening performance for various industrial applications.

A4-80 Material/Chemical Properties

ISO 3506-1 lists A4-80 bolts. "A4" means austenitic stainless steel, similar to 316-grade stainless steel, and "80" means a minimum tensile strength of 800 MPa. These bolts are known for their resistance to rust, acids, and chloride exposure, making them ideal for marine and chemical applications.

Material Composition

This composition ensures long-lasting durability, even in high-moisture or chemically aggressive environments.

Mechanical Properties and Strength

A4-80 stainless steel bolts provide excellent tensile and yield strength, making them suitable for high-load applications.

These properties ensure reliable performance under heavy loads without deformation or failure.

A4-80 Bolt Sizes and Torque Requirements

A4-80 bolts are available in various sizes and thread types to suit different fastening needs.

A4-80 Bolt Torque Chart for Proper Fastening

Applying the correct torque ensures secure fastening and long-lasting stability.

A4-80 Material Equivalent

A4-80 stainless steel bolts have global equivalents, ensuring compatibility across industries. Some of the key equivalents include:

These standards make A4-80 bolts widely accepted and interchangeable worldwide.

Applications of A4-80 Stainless Steel Bolts

Various industries use A4-80 bolts in critical fastening applications.

Their versatility and high resistance make them an excellent choice for demanding environments.

Why Choose Bigboltnut for A4-80 Bolts?

We manufacture precision-engineered A4-80 stainless steel bolts that meet the highest industry standards. Our bolts are trusted for marine, construction, chemical, and industrial applications due to their strength, durability, and corrosion resistance.

What Sets Us Apart?

When you choose Bigboltnut, you invest in reliability, strength, and performance.

Get the Best A4-80 Bolts Today!

Looking for dependable, high-strength A4-80 stainless steel bolts? Contact Bigboltnut now for a quote or custom requirements, and let us provide the perfect fastening solution for your industry.

A4-80

Hex bolts, screws, stud bolts, double ended studs, full thread rods, full threaded studs

Steel Group	Steel Grade	Chemical composition
		mass fraction, % (maxima unless stated))
		C	Si	Mn	P	S	Cr	Mo	Ni	Cu
Austenitic	A1	0.12	1	6.5	0.2	0.15 to 0.35	16 to 19	0.7	5 to 10	1.75 to 2.25
	A2	0.10	1	2	0.05	0.03	15 to 20	-	8 to 19	4
	A3	0.08	1	2	0.045	0.03	17 to 19	-	9 to 12	1
	A4	0.08	1	2	0.045	0.03	16 to 18.5	2 to 3	10 to 15	4
	A5	0.08	1	2	0.045	0.03	16 to 18.5	2 to 3	10.5 to 14	1

Steel Group	Steel Grade	Property Class	TensileStrengthRma min. Mpa	Stress at 0.2 % permanent strain Rp0.2a min. Mpa	Elongation after fracture Ab min. mm
Austenitic	A1, A2	50	500	210	0.6d
	A3, A4	70	700	450	0.4d
	A5	80	800	600	0.3d