Custom Screws Manufacturer for Made-to-Drawing Fasteners
Shi Shi Tong manufactures made-to-drawing custom screws from drawings, samples and assembly requirements. Each project is reviewed for geometry, material, tolerances, manufacturing route, inspection and repeatable production.
Send your drawing, 3D file, or screw specs for review, MOQ confirmation, and quote.
What Is a Custom Screw?
A custom screw is a threaded fastener manufactured with dimensions, geometry, materials or functional requirements that are not fully covered by standard catalog specifications. A custom design may modify the head, drive, thread, shoulder, shank, point, length, material, finish or tolerance to meet a specific assembly requirement.
Shi Shi Tong manufactures custom screws according to customer drawings, samples and technical specifications for repeatable OEM production. Learn more about our custom screw types and custom screw manufacturing process.
Explore Custom Screw Options
Custom Screw Types We Manufacture
Engineered fasteners tailored to specific assembly, load, and installation requirements.
Custom Machine Screws
Made-to-drawing machine screws with non-standard head, drive, thread, length and material combinations.
Explore custom machine screws
Custom Micro Screws
Small-diameter custom screws for electronics, precision instruments and compact assemblies.
Custom Long Screws
Long and extra-long screws manufactured for applications requiring unusual length-to-diameter ratios.
Explore custom long screws
Custom Shoulder Screws
Custom shoulder screws with controlled shoulder diameter, shoulder length and transition geometry.
Custom Security Screws
Application-specific security screws using tamper-resistant or special drive configurations, subject to tooling feasibility and applicable rights review.
Custom Set Screws
Custom set and grub screws with specified drive, point, thread, length and functional requirements.
When Should You Use a Custom Screw?
A custom screw is appropriate when a standard catalog fastener cannot meet the assembly dimensions, installation method, material, tolerance or functional requirements of a product. Custom manufacturing is usually considered for repeatable OEM applications rather than single replacement parts or retail quantities.
Situation: A standard screw does not fit the assembly.
Solution: Modify the head, thread, shank, shoulder or overall dimensions according to the assembly drawing.
Situation: The screw requires an unusual length or diameter.
Solution: Evaluate long, extra-long, micro or unusual length-to-diameter designs.
Situation: The assembly requires a shoulder or stepped section.
Solution: Define the shoulder diameter, shoulder length, transition and functional tolerance.
Situation: A standard drive does not meet installation or security requirements.
Solution: Use a special, security or application-specific drive configuration.
Situation: The material must match a special environment.
Solution: Select material based on corrosion resistance, strength, weight, conductivity and service conditions.
Situation: Critical dimensions require controlled tolerances.
Solution: Identify functional dimensions and agree on inspection requirements before production.
Custom Screws vs. Standard Screws: What Is the Difference?
Standard screws use established catalog dimensions, threads and materials, while custom screws are manufactured to drawing-defined requirements. Custom screws are suitable when the assembly needs non-standard geometry, material, tolerance or functional features that cannot be achieved reliably with an off-the-shelf fastener.
| Comparison | Standard Screws | Custom Screws |
|---|---|---|
| Dimensions | Fixed catalog sizes | Drawing-specified dimensions |
| Head and Drive | Standard configurations | Standard-modified or special designs |
| Thread | Common catalog threads | Application-specific requirements |
| Shoulder and Shank | Limited standard options | Custom length, diameter and geometry |
| Materials | Common stocked materials | Selected according to the application |
| Tolerances | General commercial tolerances | Critical tolerances defined by drawing |
| Tooling | Usually no dedicated tooling | Tooling may be required |
| Quantity | Suitable for stock purchasing | Primarily intended for OEM production |
| Cost Evaluation | Catalog or unit pricing | Based on drawing, material, tooling and quantity |
| Application | General fastening | Product-specific assembly requirements |
Choose a standard screw when an existing catalog fastener fully meets the assembly requirements. Consider a custom screw when important dimensions, materials or functional features cannot be satisfied by a standard product.
Custom Screw Design Options
A custom screw can be engineered around the assembly, load, installation method, environment and production requirements of the application.
Head Types
Pan, flat, countersunk, round, button, hex, socket, flange and drawing-specific heads.
Drive Types
Phillips, slotted, hex socket, Torx-style, combination, security and custom drives.
Thread Options
Metric, inch, machine, self-tapping and application-specific thread geometry.
Shank and Shoulder
Fully threaded, partially threaded, unthreaded shank, stepped shank and precision shoulder.
Point and End Features
Flat, cone, cup, dog, pilot, reduced, rounded or drawing-specific ends.
Special Features
Cross holes, axial holes, venting, sealing features, captive structures, grooves, knurls and assembly features.
Dimensional Control
Strict adherence to overall length, thread length, shoulder diameter, concentricity, straightness and drawing-defined tolerances.
Materials for Custom Screw Production
Material selection affects strength, corrosion resistance, weight, conductivity, appearance and manufacturing feasibility. Shi Shi Tong reviews the requested material together with the screw geometry, tolerance and application environment before production.
Stainless Steel
For corrosion resistance, cleanliness and general industrial applications.
Carbon and Alloy Steel
For strength, heat-treatment options and cost-effective volume production.
Brass, Copper and Bronze
For conductivity, corrosion resistance, appearance and specialized assembly requirements.
Aluminum
For lightweight applications where reduced mass is important.
Titanium
For applications requiring low weight, corrosion resistance or specialized material performance.
Need a specific coating?
Explore our surface finishesHow to Choose the Right Custom Screw
Choosing a custom screw requires evaluating the assembly, load, installation method, environment, geometry, material, tolerance and production quantity together. The correct design is not determined by screw size alone; it must support the intended function and remain practical for repeatable manufacturing. Review our custom screw materials and custom screw design options.
Define the Application
- Where the screw will be installed
- What components it will assemble
- Static, vibration or repeated loading
- Indoor, outdoor, corrosive or high-temperature conditions
Select the Screw Structure
- Head type & Drive type
- Thread & Point
- Shoulder & Shank
- Overall length
Select the Material
- Strength & Weight
- Corrosion resistance
- Conductivity
- Appearance & Feasibility
Define Critical Tolerances
- Assembly fit & Rotation
- Positioning & Clamping
- Sealing
- Thread engagement
Confirm Installation
- Manual or automatic installation
- Tool accessibility
- Torque requirements
- Security & Repeated assembly
Confirm Production
- Initial order quantity
- Annual quantity
- Sample requirements
- Inspection documents & Schedule
How Do You Specify a Custom Screw?
Provide a drawing with dimensions for the head, drive, thread, length, material, finish, and tolerances. Include quantity, application, and inspection details for review.
A sample aids evaluation, but a confirmed drawing ensures tolerance and function clarity. Check our screw guide and quality standards.
Drawing Annotations Needed:
- Overall length
- Head diameter & height
- Drive type and size
- Thread diameter & pitch
- Thread length
- Shoulder diameter & length
- Shank diameter
- Point or end configuration
- Critical tolerances
RFQ Information Checklist
| Drawing | PDF, STEP, STP, DWG or DXF |
| Thread | Metric, inch or drawing-specific |
| Material | Stainless steel, steel, brass, aluminum or titanium |
| Finish | Drawing-specified surface requirement |
| Quantity | Initial order and estimated annual demand |
| Application | Assembly and operating environment |
| Tolerance | Critical dimensions and functional fit |
| Inspection | Required reports or testing |
| Sample | Physical sample or reference image if available |
From Drawing Review to Custom Screw Production
Learn about our custom screw manufacturing capabilities and structured production process.
Drawing and Requirement Review
Review the 2D drawing, 3D file, sample, material, quantity and application requirements.
Manufacturability Evaluation
Evaluate geometry, critical tolerances, material, tooling and the suitable manufacturing route, which may include cold heading, multi-station forming, thread rolling and CNC secondary machining.
Quotation and MOQ Confirmation
Confirm the commercial quantity, tooling requirements, production assumptions and quotation.
Tooling and Sample Production
Prepare the required tooling and manufacture samples when sample approval is part of the project.
Sample Verification
Check critical dimensions, appearance and drawing requirements before mass production approval.
Controlled Production and Inspection
Manufacture to the approved drawing and apply the agreed in-process inspection, final verification and batch documentation.
How Do You Order Custom Screws from a Manufacturer?
To order custom screws, send the manufacturer a drawing or sample together with the material, quantity, application and inspection requirements. The manufacturer then reviews manufacturability, confirms tooling and MOQ, produces samples when required and begins mass production after technical and sample approval.
Submit Requirements
Send the drawing, sample, material, quantity and application details.
Engineering Review
Clarify dimensions, tolerances, tooling and manufacturing assumptions.
Receive Quotation
Review pricing, MOQ, tooling, sample requirements and production terms.
Confirm Sample Requirements
Approve sample quantity, critical dimensions and inspection expectations.
Approve the Sample
Confirm that the sample meets the agreed drawing and functional requirements.
Place the Production Order
Confirm the production quantity, packaging, documentation and delivery terms.
What Determines Custom Screw Cost, MOQ and Lead Time?
Custom screw cost, MOQ and lead time depend on geometry, material, tolerances, tooling, surface treatment, inspection requirements, quantity and production scheduling. A drawing review is required before the manufacturing route, commercial quantity and schedule can be confirmed.
Key Cost Factors
MOQ & Tooling Guidelines
Regular Custom Screw Quantity
Confirmed by Drawing Review
Long or Specialized Screw Quantity
Evaluated by Specification
according to geometry, material, tooling and process
Final MOQ is confirmed after drawing, tooling and process review.
Common Tooling Preparation
Confirmed After Review
Non-Standard Tooling Preparation
Quoted with Project Schedule
Tooling, sampling, production and delivery timing are confirmed separately according to the approved requirements and current scheduling.
Quality Control for Drawing-Specified Screws
Quality requirements for custom screws must be defined by the drawing and application. Before production, the critical dimensions, tolerances, material requirements, surface finish and inspection expectations should be confirmed to ensure proper quality control.
Typical Inspection Items:
- Overall and feature dimensions
- Thread dimensions and thread fit
- Head and drive geometry
- Shoulder diameter and length
- Straightness and concentricity where specified
- Material and finish requirements
- Visual appearance
- Drawing-specific functional features
Note: Required inspection documents and reporting must be specified during the quotation stage.
Custom Screws for OEM Applications
The suitability of a custom screw depends on the assembly design, operating load, installation method, material compatibility and service environment. Application details help the engineering team evaluate the design more accurately.
Quality Certifications & Project Documentation
Current certificates and project-specific third-party reports are presented according to their actual scope, material and validity.
ISO 9001 Quality Management
Quality Management System
RoHS Documentation
Available Where Applicable to the Material or Project
SGS Test Reports
Independent Material Testing
Environmental Test Documentation
Project-Specific Material and Environmental Reports
Incoming Material Inspection · In-Process Inspection · Dimensional Verification · Final Inspection · Traceable Quality Records
Trusted by Global Customers
With fastener manufacturing experience since 1998, we maintain transparent communication from initial technical evaluation to final delivery. Take a glimpse into our customer interactions and production environment.
Want to discuss your custom screw project with our team?
Custom Screw Frequently Asked Questions
What information is required to manufacture a custom screw?
How do I specify unique screw dimensions?
What materials are available for custom screws?
Can Shi Shi Tong manufacture screws from a sample?
How is the MOQ for a custom screw project determined?
How is custom screw tooling lead time determined?
Can you manufacture custom micro screws and extra-long screws?
Do you manufacture custom screws for customers in the United States?
Do you manufacture ball screws, lead screws or screw conveyor components?
What Information Is Needed for a Custom Screw Quote?
For an accurate custom screw quotation, provide as much of the following information as possible. Send us your drawing, sample information, material requirement and estimated order quantity. Our team will review the custom screw design and respond with manufacturability feedback, MOQ information and quotation requirements.
Contact Information
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Company
Shenzhen Shi Shi Tong Metal Products Co., Ltd.
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Email
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Phone / WhatsApp
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Address
Building 9, Tantou First Industrial Zone, Songgang Street, Bao’an District, Shenzhen, Guangdong, China
