What is A194 material?

The ASTM A194 specification covers carbon, alloy, and stainless steel nuts intended for use in high-pressure and/or high-temperature service. Unless otherwise specified, the American National Standard Heavy Hex Series (ANSI B 18.2. 2) shall be used.

What is a Grade 4 nut?

ASTM A194 Grade 4 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon molybdenum steel. Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment.

What is a grade 7L nut?

The ASTM A194 Grade 7L specification covers carbon, alloy, and stainless-steel nuts intended for use in high-pressure and/or high-temperature service. Nuts up to and including 1-inch nominal size shall be UNC Series Class 2B fit.

What is the difference between 2H and 2HM nuts?

Both 2H and 2HM nuts have the same chemical composition. Grade 2H nuts have a higher proof load requirement. While not showing all of the sizes, this is a representative sample. Nominal Size, in.

What is ASTM A194 2H?

ASTM A194 Grade 2H is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon steel. Grade 2H nuts can be produced by means of hot forging, cold forging or machining from heat treated bar stock.

What is a Grade A nut?

Grade A Nuts. Strength exceeds Grade 2. ASTM A325. Bolts meet ASTM A325 Type 1 standards for structural steel joints.

What is ASTM A563 Grade A?

The ASTM A563 specification covers the chemical and mechanical requirements for carbon and alloy steel nuts used on bolts, studs, and externally threaded fasteners. Hot-dip galvanized nuts must be tapped oversize to allow for the added thickness of the zinc on the threads of the externally threaded fastener. …

Is ASTM A193 B7 stainless steel?

The ASTM standard covers alloy steel and stainless steel bolting materials for high temperature or high-pressure service….A193 Grades.

Is B7 harder than Grade 8?

It is also quenched and tempered at 800 F leading to its strength. Grade 8 has 0.28-0.55% carbon, 0.030% max phosphorus, and 0.050% max sulfur….Grade 8.

What is the strongest nut?

One nut you have likely never seen in the shell is the macadamia, and for good reason. Unlike opening a peanut or a pistachio, it takes some serious muscle to extract the edible nut from its shell: 300 pounds of pressure per square inch to be exact, making it the hardest nut in the world to crack!

What is the ASTM A194 Grade 3 material?

ASTM A194 Grade 3 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from ferritic stainless steel grade AISI 501. Grade 3 nuts can be produced by means of hot forging, cold forging or machining from bar stock (Grade Type AISI 501) followed by heat treatment.

Which is the ASTM grade 4 fastener material?

ASTM A194 Grade 4 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon molybdenum steel. Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment.

What are the requirements for Grade 4 nuts?

Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment. ASTM A194 specification covers requirements for chemical composition, heat treatment, hardness, proof load, etc., for Grade 4 nuts. AThe intentional addition of Bi, Se, Te, and Pb is not permitted.

What are the ASTM A194 hex nuts used for?

They maintain their strength in high-pressure and high-temperature environments and are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. Also known as heavy hex nuts, they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.