Identify the working area
The internal thread connects the screw; the external structure connects the parent material.
SERRATED COLLAR INSERT
Serrated Inserts
Understand mechanical anchoring through the serrations.
Observe the internal thread, external thread and end serrations to distinguish connection, positioning and anti-rotation functions.
DESIGNED FOR CONNECTION
Every serration needs matching installation conditions.
The product illustration shows a solid insert with internal and external threads and end serrations. End features can engage the parent material to resist rotation, but pressing, screwing or forming methods cannot be determined from appearance alone. Follow the ZCOIL structural drawing and process documents.
Check end engagement
Include serrations and their parent-material contact areas in drawing checks.
Confirm the installation method
Do not directly apply another mechanical anchoring process.
01 / STRUCTURE
Start with the right structure.
The insert structure determines how serrated inserts connect and install.
Serrated structure
Serration position and parent-material engagement determine the installation method.
Custom structure
Confirm the serrations for the interface, available space and anti-rotation requirements.
For custom structures, provide drawings and operating conditions for engineering review.
02 / MATERIAL
Match the material to the conditions.
These material options are discussion points; not every model is available in every combination.
Stainless steel
Confirm grade, strength and corrosion resistance against the supply drawing.
Other materials
Discuss the parent material, environment and connection loads.
Material documentation
Specify the material standard and required inspection documents in the order.
03 / SURFACE
The finish is part of the connection.
Consider friction, corrosion resistance and identification in the operating environment. Confirm available combinations with an engineer.
Surface condition
Confirm whether lubrication, protection or another treatment is needed.
Mating compatibility
Check the combination of parent material, screw, media and surface treatments.
Made to drawing
Include treatment type and thickness in dimensional and acceptance requirements.
INSTALLATION
From preparation to final inspection.
Obtain the structural drawing
Confirm serration dimensions and contact surfaces.
Confirm the installation method
Check the receiving hole, tool and assembly direction.
Prototype validation
Check parent-material deformation and installed position.
Functional inspection
Verify anti-rotation, connection and sealing performance as required.
Actual dimensions, tools and processes are subject to the approved product drawing and technical agreement.
CONFIGURATION
Bring your requirements to our engineers.
Choose a preferred configuration and add thread size and operating conditions. This is an engineering enquiry, not a confirmed supply configuration.
Confirm these details for a clearer discussion.
Serrations and parent material
Check serration position and material condition at the contact surfaces.
Installation process
Confirm screw-in, press-in or forming requirements from the drawing.
Interface and space
Internal and external threads, length and end clearance.
Sealing requirements
Specify the media and pressure, and confirm sealing separately.
KNOWLEDGE & RESOURCES
Explore further.
Frequently asked questions
Do serrated inserts inherently provide a seal?
Serrations alone do not establish sealing performance. Confirm the sealing design and relevant tests.
Can another product's installation method be used directly?
No. Locking structures and deformation mechanisms differ between products. One method cannot be treated as a universal process for serrated inserts.