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How It Works
A shoulder rivet works by separating the fastening area from the functional working area of the part. During installation, the rivet end is formed to lock the assembly together, while the shoulder section remains as the controlled contact surface for rotation, spacing, or location. This makes shoulder rivets especially useful in assemblies where a standard rivet would create too much compression, insufficient clearance, or unstable movement. In custom designs, the relationship between shoulder size, body length, and rivet forming section is developed according to the real assembly structure and motion requirement.
Advantages
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Defined functional shoulder
The shoulder creates a controlled working section between joined parts. This helps support spacing, guided movement, or stable
positioning inside the assembly.
positioning inside the assembly.
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Fast and efficient permanent assembly
Shoulder rivets are suitable for production environments where quick installation and consistent batch assembly are important.
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Reduced part complexity
A single rivet can combine fastening, spacing, and pivot support in one component, reducing the need for separate pins, screws, or spacers.
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Consistent assembly relationship
When shoulder dimensions, concentricity, and formed end geometry are properly controlled, the rivet can deliver more stable fit and
functional behavior across repeated production runs.
functional behavior across repeated production runs.
Industry Applications
Press-Fit Location Points
The knurled section is pressed into a prepared hole and held by interference, so knurl form, knurl depth and hole size decide how much pull-out and torque the joint resists.
Anti-Rotation Fixing
Used where a pin must stay located and must not turn in its hole. The splined section bites into the host material rather than allowing movement.
High-Volume Assembly
Suitable for lines where pins are fed and pressed automatically, so flange seat, body diameter and knurl condition are held steady across batches.
