When dealing with construction and civil engineering projects, precision and reliability in material connections are paramount. One crucial component that ensures these qualities is the rebar coupler. In this post, we will specifically explore the characteristics of the 25 rebar coupler and answer the essential question: how many threads does a 25 rebar coupler have? 

How Many Threads Does a 25 Rebar Coupler Have?

The 25 rebar coupler features 20 threads. This unique specification makes it an ideal choice for various applications, particularly in structures requiring reinforced concrete.

Connection Method for 25 Rebar Couplers

The connection of rebar using the 25 rebar coupler involves a precise process. Steel bars are prepared by removing some of their longitudinal and transverse ribs using a rolling threading machine. This method employs cutting techniques to create standard straight threads on the rebar, which can then be seamlessly connected with a purpose-built 25 rebar coupler.

1. Bar Preparation: The straight threads need to be achieved by ensuring that the length of the threaded ends of the rebar measures between 10.5 mm and 12.5 mm, with a standard thread length of approximately 30 mm to 33 mm.

2. Thread Length and Tolerances: It's crucial to note that the length of the rebar's thread should be half the length of the coupler itself, with a tolerance of 2P (where **P** is the pitch). This precise alignment helps the threaded portions of the rebar sit centrally within the coupler, ensuring a secure connection.

3. Torque Specifications: For effective installation of the 25 rebar coupler, a minimum torque of 230 N.m is required. This torque allows for accurate threading on circular bars, using specific tools such as taps and wrenches to achieve the desired finish.