CNC Fasteners
Custom CNC Bolts
Bolts machined on CNC equipment to a customer drawing, following a fixed route: design in CAD, material selection, CNC machining, quality inspection, then secure packaging and dispatch. Material is chosen by application.
- Carbon steel
- Stainless steel 304
Product Overview
Bolts machined on CNC equipment to a customer drawing, following a fixed route: design in CAD, material selection, CNC machining, quality inspection, then secure packaging and dispatch. Material is chosen by application. High carbon steel bolts suit valves, pump shafts and gears; medium carbon steel suits axles, light gears and forged connecting rods; mild carbon steel is used for tie rods, anchor pins and machinery parts. Stainless steel including 304 is available where corrosion matters.
Key Benefits
- Material grade matched to the application instead of used as a default
- Thread pattern, length and head design made to your drawing
- Surface treatments from polishing to anti corrosion coatings
- Each bolt inspected before packing
- Bulk orders handled without changing the process route
Problems It Solves
- Bolts failing because the grade was chosen by price rather than by duty
- Head or drive forms that no catalogue supplier stocks
- Coating specified after machining, causing thread fit problems
- Inconsistent quality across large orders
Where It Is Used
Applications And Buyers
Application Scenarios
- Valves, pump shafts and gears using high carbon steel bolts
- Axles, light gears and forged connecting rods using medium carbon steel
- Tie rods, anchor pins and machinery parts using mild carbon steel
- Corrosion exposed joints using stainless steel
Who It Is For
- Pump and valve manufacturers
- Machinery and drivetrain builders
- Structural and equipment assemblers
- Buyers needing a specific head or thread form
Technical Features And Specifications
Technical Features
- CAD design phase before machining
- Material selection by application
- CNC machining of thread, shank and head
- Quality inspection on each bolt
- Polishing and anti corrosion coatings available
| Process | CNC machining with CAD design phase |
|---|---|
| Materials | High, medium and mild carbon steel; stainless steel including 304 |
| Customisation | Thread pattern, length, head design |
| Surface Treatment | Polishing, anti corrosion coatings |
| Inspection | Quality checks on each bolt before packing |
| Order Size | Small batches to bulk orders |
How It Is Made And Checked
Materials Process And Quality Control
Materials
- Carbon steel
- Stainless steel 304
Manufacturing Process
- CAD design
- CNC machining
- Polishing
- Quality inspection
- Packaging
Quality Control
- Specification agreed in writing before production starts
- First article or sample approved against the agreed specification
- Goods inspected and photographed at the factory before loading
- Inspection report sent to you before the container sails
Customisation Options
What Can Be Varied
- Thread pattern and pitch
- Shank length and head design
- Material grade by application
- Polishing or anti corrosion coating
- Packaging for the destination and transit time
Compared With The Alternatives
| High carbon versus mild carbon steel bolts | High carbon suits valves, pump shafts and gears where hardness matters; mild carbon is the practical grade for tie rods, anchor pins and general machinery parts. |
|---|---|
| Stainless steel bolts | Stainless resists corrosion but is generally lower in strength than a hardened carbon steel bolt of the same size, so the joint has to be checked. |
Use Guide
- Tell us the application, not only the dimensions, so the grade can be chosen properly
- Specify coating before machining so thread allowances are set correctly
- Confirm any required strength class for structural joints
- Keep an approved sample as the reference for repeat orders
Questions
Questions Buyers Ask About This Product
Which steel should I choose?
High carbon for valves, pump shafts and gears; medium carbon for axles, light gears and forged connecting rods; mild carbon for tie rods, anchor pins and general machinery parts.
Do you supply stainless steel bolts?
Yes, including 304 where corrosion resistance is needed.
Can you make a custom head design?
Yes. Thread pattern, length and head design are all made to your drawing.
What surface treatments are available?
Polishing and anti corrosion coatings, specified with the order.
How are the bolts packed?
Securely for the journey, with packing specified for the transit time and destination.
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Get A Price For Custom CNC Bolts
Send the duty figures, the material if it is fixed, and the quantity. We will confirm the specification and quote against it.