Custom Long-Neck Carriage Bolts | Hetai
Precision-Engineered Carriage Bolts for Specialized Applications
Hetai manufactures custom long-neck carriage bolts for applications that require extended neck lengths, reliable fastening, and precise dimensional control. Designed for furniture, woodworking, construction, machinery, steel structures, and other specialized applications, these non-standard carriage bolts can be manufactured according to customer drawings, samples, or technical specifications.
Compared with standard carriage bolts, long-neck carriage bolts feature an extended neck section beneath the head, providing additional clearance and positioning options for applications with thicker materials, recessed mounting structures, or special assembly requirements.
Extended Neck Design
The defining feature of a long-neck carriage bolt is its extended square-neck section beneath the domed head.
The square neck is designed to engage with the mating material and help prevent the bolt from rotating during tightening. The extended neck provides additional reach and can be customized to suit different material thicknesses and assembly configurations.
Hetai can manufacture the neck length, head dimensions, square-neck size, shank diameter, and thread length according to specific application requirements.
Fully Customized Carriage Bolts
As a manufacturer specializing in custom fasteners and non-standard bolts, Hetai can produce long-neck carriage bolts based on:
- Customer drawings
- Physical samples
- 3D models
- Technical specifications
- Specific application requirements
Customization options include:
- Bolt diameter
- Overall length
- Neck length
- Head diameter
- Head height
- Square-neck dimensions
- Thread diameter and pitch
- Thread length
- Partial or full thread
- Material and strength grade
- Surface treatment
Special head and neck configurations can also be developed for applications requiring non-standard dimensions.
Materials and Strength Grades
Hetai custom long-neck carriage bolts can be manufactured from a variety of materials, including:
- Carbon steel
- Alloy steel
- Stainless steel
- Brass
- Other materials according to customer requirements
Depending on the application, different strength grades and material specifications can be provided to meet mechanical performance requirements.
For applications exposed to moisture, outdoor environments, or corrosive conditions, stainless steel or suitable protective surface treatments can be selected.
Surface Finishes
To meet different performance and appearance requirements, Hetai can provide various surface finishes, including:
- Zinc plating
- Nickel plating
- Chrome plating
- Black oxide
- Electrophoresis
- Other customized finishes
Surface treatment can be selected according to corrosion resistance, appearance, environmental conditions, and customer specifications.
Precision Manufacturing Process
Hetai uses advanced manufacturing processes to produce custom long-neck carriage bolts with consistent dimensions and reliable quality.
A typical production process may include:
Material Preparation → Cold Heading → Neck & Head Forming → Thread Rolling → Secondary Machining → Surface Treatment → Quality Inspection → Packaging
Cold heading is used to efficiently form the bolt head, neck, and shank, while thread rolling produces accurate and consistent threads. Secondary machining can be applied when special neck dimensions or other non-standard features are required.
Every stage is controlled to ensure dimensional accuracy and product consistency.
Applications
Custom long-neck carriage bolts are suitable for a wide range of applications, including:
- Woodworking
- Furniture manufacturing
- Wooden structures
- Construction
- Steel structures
- Machinery
- Agricultural equipment
- Automotive components
- Industrial equipment
- Custom mechanical assemblies
They are particularly useful when standard carriage bolts do not provide sufficient neck length or the required mounting dimensions.
Why Choose Hetai?
Custom Dimensions
Long-neck dimensions, head sizes, square-neck geometry, thread specifications, and overall length can be customized.
Precision Manufacturing
Advanced cold heading, thread rolling, and secondary machining processes provide consistent dimensional accuracy.
Multiple Materials
Carbon steel, alloy steel, stainless steel, and other materials are available according to application requirements.
Flexible Production
Suitable for prototypes, small-batch production, and high-volume orders.
OEM & ODM Support
Hetai can manufacture products according to customer drawings, samples, or technical specifications.
Your Custom Long-Neck Carriage Bolt Manufacturer
Hetai specializes in custom carriage bolts, non-standard bolts, and precision fasteners for demanding applications.
From initial design and material selection to forming, thread processing, secondary machining, surface treatment, and final inspection, Hetai provides an integrated manufacturing solution for customized fasteners.
If you require custom long-neck carriage bolts with special dimensions or configurations, send Hetai your drawings or samples. Our engineering and production team can develop the appropriate manufacturing solution for your application.
Hetai — Custom Fasteners Manufactured to Your Specifications.
