Finished hex nut is usually hex nuts with six sides because this shape is the easiest to grasp. These nuts are small threaded metal blocks that mainly help to hold the bolts. These nuts and bolts fix the parts of the machine together to assemble them step by step.
Because of their hexagonal head, they are also called “hex nuts”.
Finished hex nut Specifications
Finished hex nut has ASTM A563-A grade and is compatible with mild steel bolts, including SAE Grade 2, ASTM A307, ASTM F1554 grade 36, and AASHTO M183. In addition, these rivets provide finished patterns for SAE grade 5 and 8 nuts.
The sides of these nuts help to easily hold the pliers and wrenches, clamp the nuts and apply the required torque to them. Some of the metal parts are hot-dip galvanized, so the thickness of the threaded part of the fastener is increased by 2.2 to 5 mils.
The galvanized finished nut has loose threads to match the corrosion-resistant coating function of the bolt.
A nut is usually made of steel, which is specially designed with the help of a steel cutting machine. The entire manufacturing process is relatively fast. Thousands of nuts can be produced within a few minutes.
Now the nuts are available in steel, stainless steel, grade 5 black oxide, aluminum alloy, grade 2 galvanized, yellow grade 5 zinc, brass, Nylon Patch, Cad Yellow L9, Metric Hex, Silicon Bronze, MS51971 Hex Nuts (Coarse Thread), MS51971 Hex Nuts (Coarse Thread), etc.
However, steel hex nuts are used more frequently than any other type.
Usually, finished nuts are coated with anti-rust materials to prevent them from rusting. The anti-rust nut can be used indoors and outdoors.
Types of the finished hex nuts
Grade 2 finished nut
Grade 2 finishing nuts are hexagonal threaded fasteners with a thickness of 0.875 D, where D is the normal size and the width of the nut. 1.5 D is on the drawing. These rivets are usually made of mild steel. This is the most versatile and widely used design in the nut industry and can be used with any low-carbon bolts that have not been heating treated. The minimum tensile strength of the bolt must be 74,000 psi or less.
Its components include:
- Carbon: 0.47%
- Phosphorus: 0.12%
- Sulfur: 0.23%
- Coarse teeth: 90,000 psi
- Fine teeth: 80,000 psi
Hot Dip Galvanized finished nuts
Hot-dip galvanized finished nut is also a fastener. It has 6 double-sided internal threads with a thickness of 0.875 D, where D is the normal size of the nut, and the width on the plane is 1.5 D. They are also made of mild steel with electro-galvanized coating.
They are used with low-carbon bolts and screws and apply a minimum tensile strength of 74,000 psi or less to prevent the fastener from entering moisture, salt, etc. Corrosion conditions.
Its composition includes:
- Carbon: 0.47%
- Phosphorus: 0.12%
- Sulfur: 0.23%
- Rockwell B68-C32
- Coarse thread: 68,000 psi
- Fine thread: 60,000 psi
Stainless steel finished nuts, 304 and 316
six-sided threaded fasteners It is hexagonal with a thickness of 0.875 D, where D is the normal size of the nut, with a face width of 1.5 D, made of austenitic alloy.
These rivets are used with stainless steel bolts and screws, using the specified minimum tensile strength, which is equal to or less than the specified coupling nut tension.
Both stainless steel nuts are made of 316 stainless steel, which is corrosion-resistant, so it has higher resistance and excellent high-temperature resistance.
The components of stainless steel finished nuts include:
- Austenitic alloys of 303, 303Se, 304, XM7
- Chromium: 18%
- Nickel: 8 -10%
- Rockwell B95-C32