Dimensions of different stud bolts with applications

Stud bolts are threaded steel bars generally used for connecting flanges. When these are connected with particular nuts, they work wonderfully in providing toughness and strengthening mechanical joints. Stud bolts are used in almost every industry today like pipeline, drilling, refinery, petrochemical, etc.


What are the types of stud bolts?


Stud bolts help in fastening joints with solid integrity and distributing pressure load. This effectively helps in avoiding damages. Distinguished by their threaded pattern and design, some of the industrial stud bolts are:


  1. Fully threaded stud bolt

  2. Tap end stud bolt

  3. Bonding end stud bolt

  4. Double-end stud bolt

  5. Dowel screw

  6. Weld stud bolt

  7. Clinch stud bolt


What are the sizes of stud bolts?


The size of a stud bolt is measured from either one end to the other or from first thread to first thread. For dimensional tolerance, these points have to be kept in mind for every type of stud bolt:


  • · Commencing from length to 12-inch tolerance = ± 1.6 mm

  • · Starting from Length over 12 inches to 18-inch tolerance = ± 3.2 mm

  • · Initial from Length over 18-inch tolerance = ± 6.4 mm

  • While measuring the length of the stud bolt, the height of the chamfers is not taken into account.


The dimension of the bolt is shown in metric or imperial units:


  • Diameter is the measurement of the width of the shank portion of the screw. This does not include the bolt head.

  • Pitch is the measurement between the tips of the adjoining threads of the shank.

  • Length is calculated from measuring the end of the chamfer to the undercut of the head, excluding the head itself.


Applications of different stud bolts


  • Fully threaded stud bolt

This is a long threaded steel bar where nuts are used at both ends for fastening large chunks together. These are even utilized for adjusting parts of machines and for machines that need quick assembling or disassembling. The mentioned metric size for a fully threaded stud bolt is M10 to M100 while its imperial size is 3/8 to 8”. Construction, manufacturing, plumbing, oil extraction, marine, etc. are some of the industrial sectors that use this kind of stud bolt.


  • Tap end stud bolt

These are shorter stud bolts. The studs are drilled into holes. The design is made in such a way that it contains a shaft as well as a threaded portion to allow a nut to seal the joint. The tap end part has a chamfered point whereas the other end where the nut is fitted might have either a chamfered end or even a round end. These stud bolts are made as per the customised requirement. The metric size is M10 to M100 and the imperial size is 3/8 to 8”


  • Bonding end stud bolt

The bonding end stud bolt has a broad threaded head with many holes. It helps in bonding solid joints and joining multiple parts with sturdy and immovable integrity. When classic and traditional fasteners are short of supply, these bolts are efficiently utilised. Materials like plastic, carbon fibre, or glass-reinforced plastic products are designed in a complicated fashion. These bonding stud bolts give a tough metal fixation on all these materials.


  • Double-end stud bolt

This kind of bolt has a uniform threaded length on both its ends and a shaft in the middle portion. This thread accepts nuts for Class 2A tolerances. It is used for high-strength bolting purposes. The metric size of the double end stud bolt is M10 to M100 while the imperial size is 3/8 to 8”. Automobile industries, windmills, turbines, etc. frequently use double-end stud bolts. Moreover, these studs fasten flanges together.


  • Weld stud bolt

This bolt has a thin head for easy welding into holes. Often used by fabricators, the stud bolts help in fastening tightly to the concerned material from one side. The metric size is M10 to M100 and the imperial size is 3/8 to 8”. This is used for fixation of insulation material and pipes, construction, attach flanges, catering, fixation of burners, in automotive industries, food processing, shipbuilding, electrical industry, etc.


  • Dowel screw

This screw is designed especially for drilling into wood or metal. The screw is drilled into wood whereas it is fixed in a socket in case of metal. This dowel screw is often used in furniture, flooring, woodworking, or fixing balusters to a staircase. Be it in wood or metal, this screw is installed with a driver tool or locking pliers.


  • Clinch stud

This stud has a small thin head used in metal notches. It offers high torque resistance.



Conclusion


A torque wrench is used to tighten and loosen studs that are used in every place where more precise torque values are important. This is because studs do not twist when tightening providing a better clamping force. Wherever applicable, the studs give convenient installation and better clamping uniformity. 





Content Sources :- ABSGroup

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