
Stud Bolt Specification
Raw Material: 42CrMoA, 35CrMoA, 40CrNiMoA
Strength Level: 8.8, 10.9
Dimension: M18~M64
Length: 2m-12m
Stud Bolt Types Introduction
Stud bolt has a thread on full lengths or at both ends. As shown in images. It is having three components if washers are not used (two nuts and stud). If you used washer it would become five. Sometimes additional nuts are used for hydraulic tensioning with larger size stud.



Double End studs are available in cut or rolled threads, and in any grade of material. They may be furnished plain, plated or coated at the customer’s request. LT Group provide heat-treatment, cold thread, lab services according to customer’s technical requirements.
Stud Bolt Surface Treatment:
Stud bolt Surface Treatment has many options, such as Oil, Grease, Dacromet, Zinc coating,Paint, tape, fabric, Water-proof Paper, Box. There are 2 most used treatment – zinc coating and Black Oxide Coating. Here are the outlooks:


Stud Bolt Available Dimensions:
Stud Bolt Grade | Diameter | Length(mm) | Nut Grade | Washer |
---|---|---|---|---|
8.8 | M11-M56 | 12000MAX | 8 | 35-45HRC |
9.8 | 9 | |||
10.9 | 10 | |||
12.9 | 12 |
Stud Bolt Application
Stud bolt is a threaded rod with 2 heavy hexagon nuts, it is a component developed for flange connections in Petrochemical and Oil & Gas industry, now its been used in many more fields. Wind tower, Nuclear power, Railway, Automotive industry, Railway, Construction, Electronic industry.


Stud bolt with different thread forms has been developed for various applications, and the major difference is the threading method and thread length.