What does A2 mean in bolts?

DIN/ISO A2 Stainless Steel Is A Corrosion Resistant Steel; It Is Also Known As ASTM-304. A2 / ASTM-304 Is An 18/8 Stainless Steel : This Designates A Metallurgical Content Of 18% Chromium & 8% Nickel. A Bolt Marked A2-70 Is A 304 Stainless Steel Bolt With A 700 N/mm2 Tensile Strength (See Below Table).

What is A2 screw size?

A2-70 Stainless Hexagon Socket Screw, Type : Cap Head, Thread Size : M4, Bolt Length : 20mm, Thread Length : 20mm [per Pk/50]

What is Class 2A thread fit?

Class 2A is a medium fit. Class 3A is a tight fit used where a closed fit between mating parts is required.

Is A2 stainless steel?

Both A2 and A4 grades are classed as Austenitic stainless steel (sometimes called the 300 series). This means that they have high chemical resistance but cannot be hardened by heat treatment.

What is stronger A2 or A4?

A2 vs A4 stainless steel strength Whereas grade A4 is stronger than grade A2, and its tensile properties are almost similar to alloy steel grade 8.8.

What is A2 steel?

A2 tool steel is an air hardening, cold work steel. A2 is a 5% Chromium steel which provides high hardness after heat treatment with good dimensional stability. It is heat treatable and will offer a hardness in the range 57-62 HRC.

What is 2A and 2B in thread?

Classes 2A and 2B are by far the most popular thread classes specified for inch series mechanical fasteners. Close to 90 percent of all commercial and industrial fasteners produced in North America have this class of thread fit. Class 2A external threads have an allowance, Class 2B internal threads do not.

What is a Class 2 thread?

Class 2 threads offer the perfect mix of function and strength, but also efficiency and manufacturing economy. Nearly all construction and industrial fasteners from structural bolts to anchor bolts have Class 2 threads. Both ASTM and SAE specifications designate a class 2 tolerance.

What are bolt sizes?

Diameters of Screws / Bolts To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

What does M10 bolt mean?

M10-1.0 x 20 M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.

What metal is A2?

Chromium steel
A2 is a 5% Chromium steel which provides high hardness after heat treatment with good dimensional stability. It is heat treatable and will offer a hardness in the range 57-62 HRC.