Stainless Steel Slotted Headless Screws
Product Overview
Slotted headless screws are indispensable fastening components in various precision engineering and industrial applications. These screws are designed without external heads, allowing for a clean, flush installation, particularly where space constraints or aesthetics are a factor. The presence of a slotted drive aids in manual or tool-based insertion and removal, offering simple usability while maintaining performance.
Slotted Headless Screws from Flybear Fastener are manufactured to the highest standards using premium-grade stainless steel, making them suitable for harsh environments requiring corrosion resistance, mechanical strength, and reliability. These screws are often favored in applications such as electronics, machinery, precision instruments, and assemblies requiring minimal visibility of fasteners.

Product Specification Table
| Property | Details |
|---|---|
| Product Name | Slotted Headless Screws |
| Drive Type | Slot Drive |
| Head Type | Headless (set screw) |
| Material | Stainless Steel (A2, A4 grades) |
| Standard Compliance | DIN 427, ISO 2342 |
| Thread Type | Metric & UNC/UNF available |
| Thread Fit | 6g |
| Length Range | 3mm – 60mm |
| Diameter Range | M1.6 – M20 / #2 – 1/2″ |
| Finish | Plain / Passivated |
Technical Data Table
| Technical Parameter | Value |
|---|---|
| Tensile Strength | ≥700 MPa (Stainless Steel A2) |
| Yield Strength | ≥450 MPa |
| Hardness | 210-250 HV |
| Temperature Range | -200°C to +800°C |
| Corrosion Resistance | Excellent (Passivated SS) |
Material & Manufacturing Process
Our slotted headless screws are primarily made from high-quality stainless steel such as AISI 304 (A2) and AISI 316 (A4), which offer excellent corrosion resistance and strength. The production process includes:
- Cold forming or precision CNC machining
- Thread rolling using high-precision dies
- Slotting using CNC milling
- Heat treatment for enhanced performance
- Surface passivation as per ASTM A967 standards
This advanced manufacturing pipeline ensures dimensional accuracy, superior thread fit, and high reliability in operational conditions.
Industries and Application Scenarios
Slotted headless screws are vital in the following sectors:
- Electronics & PCBs: Securing components without interfering with circuitry
- Medical Devices: Where precision and hygiene are critical
- Aerospace: Lightweight and space-efficient fasteners
- Optoelectronics and Sensors: When minimal space and non-obtrusive designs are vital
- Mechanical & Static Assemblies: Locking functions in rotating parts
They are also frequently searched using terms like “miniature headless screws,” “set screws slot drive,” and “flush-fit fasteners” due to their role in high-precision installations.
Product Advantages & Competitive Edge
Core Strengths of Our Slotted Headless Screws
- Top-grade Material: Made with premium stainless steel A2 and A4, they offer exceptional resistance to oxidation and chemical corrosion.
- Precision Engineering: Accurate thread tolerances and concentricity ensure secure fastening in tight mechanical tolerances.
- Superior Surface Treatment: Passivation adds an extra layer of protection against harsh environments, suitable for marine and medical industries.
- Customization Capabilities: Whether based on CAD drawings or prototypes, we offer tailored size, thread, and slot dimensions.
- Ready Inventory and Fast Dispatch: Large-volume stock maintained in standard sizes for quick delivery.
- Complete Support Services: Backed by expert technical guidance and after-sales service.
Testing & Quality Assurance at Flybear Fastener
At Flybear Fastener, each batch of slotted headless screws undergoes rigorous QC procedures including:
- Coordinate Measuring Machine (CMM) dimensional inspections
- Salt Spray Test for corrosion resistance
- Torque and tensile testing
- Visual and functional checks under ISO9001:2015 guidelines
These controls ensure every unit dispatched meets or surpasses international standards.
Choosing and Buying Guide for Slotted Headless Screws
When selecting your slotted headless screws, consider the following factors:
- Required thread type (metric or inch)
- Environmental conditions (choose A4 for marine or med-tech)
- Operating temperature and mechanical load
- Desired slot depth and compatibility with assembly tools
You can check our full catalog of fastener products for similar options such as hex socket set screws and grub screws. Our engineering team is available to assist with selecting optimal designs tailored for your needs.
Conclusion and Company Profile
Whether you require miniature screws for compact electronics or high-endurance fasteners for aerospace use, Flybear Fastener delivers quality-controlled and high-performance solutions.
We always adhere to the principle of “Quality First, Customer Supreme,” and are committed to providing customers with high-quality fastener products and one-stop fastening solutions. We encourage you to explore more of our product categories and contact us for tailored industry solutions and instant quotes.








