Major Types, Standards, and Thread Profiles of the Best Quality Fasteners

It was a very unfortunate day on September 14, 1997, in the history of the global aviation industry when an aircraft in Maryland performing in an air show met a deadly crash just because some of the fasteners of its wings were not properly fixed. Such accidents are common in other industries too and all in all, they tell the importance of the best quality fasteners.

 

Some common fastener types

 

Hex bolts

 

Hex bolts or hex cap screws find applications in machining and construction. They are used with a nut, or in a tapped hole. The hex bolts that are fully threaded are also called tap bolts. 

 

Wood screws

 

Woof screws made and supplied by the standard as well as socket head bolt manufacturer have large threads along with a smooth shank that is capable of pulling two pieces of stuff together. They primarily find applications in wood and a large number of other soft materials.

 

Sheet metal screws 

  

Sheet metal screws come equipped with extremely sharp points and threads and are manufactured to be driven directly into any kind of sheet metal. They find applications in softer materials that include plastic, fiberglass, and wood.

 

Machine screws 

 

Machine screws are fully threaded and can be used by placing a nut or in a tapped hole. Certain types of these bolts are called stove bolts.

 

Socket Screws

 

Sockets Screws made and supplied by the leading socket head bolt manufacturer are machine bolts that have an internal hex socket drive. The version with longer lengths in this category of fasteners might also have a very smooth shank.

 

Basic global standards 

 

Most industrial-grade best quality fasteners are covered by two basic standards that include-

 

1.     Materials and properties

2.     Dimensions and tolerances. 

 

The American Society for Testing and Materials (ASTM) publishes specifications for materials and properties whereas the standards for dimensions and tolerances are taken care of by the American National Standards Institute (ANSI) in cooperation with the American Society of Mechanical Engineers (ASME) and the Industrial Fasteners Institute (IFI).

 

Thread Profile

 

●        Major Diameter (the largest diameter of the thread)

●        Minor Diameter ( the smallest diameter of the thread)

●        Crest (the peak of the thread) 

●        Pitch Diameter (nominally the mean of the major and minor diameters)

●        Thread Angle (the angle between two adjacent thread walls).

  

Best quality fasteners play a very important role in every modern industry in light of the primary purpose that they serve. Almost all the components of the tools and machines used in all types of industries depend upon fasteners. Any failure or nonconformity in them can result in irreparable disasters.

 

 

Concluding Remarks 

 

Super Screws is a leading standard and socket head bolt manufacturer in India producing and supplying the best quality fasteners for its national and global clientele. OEMs make up the largest segment of its clients. The entire range of products and solutions manufactured by the company is geared towards adding value to its customers’ operations. The company always aims at providing its customers with new-age engineering expertise, enhanced supply chain efficiency, and reduced costs.