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High Strength Double End Stud
QS Fastener: High Strength Double End Stud
Name: High Strength Double End Stud
Material: A193 B7
Standard: ASNI B18.31.1M
Size: M8 to M100
Length: 30 to 1000 mm
Class: 8.8
Feature: High Yield Strength and Durable Strength
Material: A193 B7
Standard: ASNI B18.31.1M
Size: M8 to M100
Length: 30 to 1000 mm
Class: 8.8
Feature: High Yield Strength and Durable Strength
Quantity
High Strength Double End Stud is manufactured from ASTM A193 B7 alloy steel and strictly complies with the ASME/ANSI B18.31.1M standard. Specifications range from M8 to M100, with lengths from 30mm to 1000mm, and the property class reaches Grade 8.8. High Strength Double End Stud offers excellent high yield strength and lasting durability, specially designed for high-temperature, high-pressure, and heavy-load conditions. It is an ideal choice for ensuring secure fastening in petrochemical, boiler, and steel structure connection applications.
What is a Double End Stud?
A double end stud is often referred to as a"stud bolt"in engineering. Its core form is the High Strength Double End Stud, featuring a cylindrical fastener with threads machined on both ends and a plain shank (or no plain shank) in the middle.
A double end stud is often referred to as a"stud bolt"in engineering. Its core form is the High Strength Double End Stud, featuring a cylindrical fastener with threads machined on both ends and a plain shank (or no plain shank) in the middle.
1. Structural Characteristics
- Double-end threads: The thread lengths on both ends may be equal, or one end may be longer and the other shorter (for the fixed end and nut end). This type of High Strength Double End Stud is designed with full consideration of different installation requirements.
- Double-end threads: The thread lengths on both ends may be equal, or one end may be longer and the other shorter (for the fixed end and nut end). This type of High Strength Double End Stud is designed with full consideration of different installation requirements.
- Headless design: Unlike standard hex head bolts, it has no fixed head, so it cannot be tightened with a wrench gripping a head like ordinary bolts. This is also an important characteristic that distinguishes High Strength Double End Stud from conventional fasteners.
2. Application Scenarios (Why not use ordinary bolts?)
- Blind hole connections: When one of the connected parts is very thick and a through-hole cannot be made, one end of the High Strength Double End Stud is screwed into the threaded hole of the component (for long-term non-disassembly), while the other end passes through the clearance hole and is tightened with a nut. The A193 B7 material is the standard choice for high-temperature, high-pressure flanges (e.g., in oil pipelines and boilers), making this High Strength Double End Stud reliably perform even in extreme environments.
- Blind hole connections: When one of the connected parts is very thick and a through-hole cannot be made, one end of the High Strength Double End Stud is screwed into the threaded hole of the component (for long-term non-disassembly), while the other end passes through the clearance hole and is tightened with a nut. The A193 B7 material is the standard choice for high-temperature, high-pressure flanges (e.g., in oil pipelines and boilers), making this High Strength Double End Stud reliably perform even in extreme environments.
- Need for precise positioning: The High Strength Double End Stud is screwed into the component and acts as a positioning"guide pin,"making it easy to accurately lower and install heavy cylinder heads or valves, significantly improving assembly efficiency and safety.
- Avoiding thread damage: In applications requiring frequent disassembly of aluminum alloy housings (e.g., engine cylinder blocks), directly using bolts that are repeatedly screwed in and out can wear out the internal threads of the housing. Using a High Strength Double End Stud protects the base threads, as wear occurs only between the stud and the nut, thereby extending the service life of the equipment.
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