







A fully threaded bolt is a type of fastener characterized by continuous threads along the entire length of the rod. This design allows full threaded bolts to provide longer effective engagement length during installation, making them suitable for situations where installation depth needs to be adjusted or for thick walled components. The two ends of the fully threaded bolt can be matched with the nut to achieve bidirectional fastening connection, commonly used in high-pressure and high load scenarios, such as petrochemicals, power energy, and mechanical equipment.
The core features include:
Full thread design: no bare rod segment, providing longer effective engagement length, suitable for thick walled components or situations where installation depth needs to be adjusted.
High strength material: Carbon steel, alloy steel, stainless steel and other materials can be selected to meet different environmental requirements, and the strength grade can reach ASTM A193 B7.
Diversified surface treatment: providing galvanizing, Dacromet, hot-dip coating, phosphating and other treatment processes, significantly improving corrosion resistance.
Accurate compatibility: Thread specifications comply with American standards (such as UNC/UNF), perfectly matching with American nuts and flange holes.
Typical application scenarios include pressure vessels and pipeline systems, heavy machinery, nuclear and thermal power equipment in the energy sector, etc. In terms of technical parameters, the diameter range is from 1/4 "to 4" (6.35mm to 101.6mm), the length range is from 1 "to 60", and the thread types include American coarse and fine threads. The strength grades include Grade 2/5/8, B7/B7M, etc.