| Specification | Pitch (P) | Head Diameter (dk) | Head Thickness (K) |
|---|---|---|---|
| M3 | 0.5 | 0.398–0.406 in | 0.197 in |
| M4 | 0.7 | 0.476–0.484 in | 0.209 in |
| M5 | 0.8 | 0.634–0.642 in | 0.205 in |
| M6 | 1 | 0.787–0.795 in | 0.201 in |
| M8 | 1.25 | 0.988–0.996 in | 0.197 in |
| M10 | 1.5 | 0.984–0.988 in | 0.205 in |
Premium Stainless Steel Knurled Thumb Screws: Large Circular Head & Flat Head
At YouJia Metal, we specialize in manufacturing high-precision stainless steel knurled thumb screws designed for easy manual adjustment without the need for tools. As an expert in customized processing of stainless steel non-standard parts, we leverage 10 years of industrial experience in Dainan (China’s stainless steel capital) to deliver both standard fasteners and bespoke custom thumb screws tailored to your specific mechanical requirements.
Our large head knurled screws are widely used in precision instruments, architectural hardware, and high-end mechanical assemblies where aesthetics and functionality are equally important.
Why Choose Our Knurled Hand-Twist Screws?
Superior Grip & Aesthetics: The circular knurled head provides maximum torque for hand tightening, while the high-mirror polished finish enhances the professional look of your equipment.
Material Excellence: Available in AISI 304 and AISI 316 (Marine Grade), ensuring these screws remain rust-proof and durable in harsh outdoor or saltwater environments.
Precision CNC Machining: Every flat head knurled screw is processed using advanced CNC machining technology to ensure ±0.005mm thread accuracy, perfectly compatible with our stainless steel hex nuts.
Non-Standard Customization: We thrive on complexity. If you need a unique thread pitch, specialized head diameter, or custom length, our team provides full customized processing based on your STP or DWG drawings.
Technical Specifications
| Attribute | Details |
| Material Grade | SS304, SS316, SS316L, 201 |
| Head Type | Large Circular Head / Knurled Thumb Head |
| Head Style | Flat Head / Slotted / Non-Slotted |
| Size Range | M3 to M20 (Standard) / Custom Non-Standard Sizes |
| Thread Type | Metric Coarse, Fine, UNC, UNF |
| Surface Treatment | Vibration Polished, Mirror Polished, Black Oxide |
Integrated Rigging & Fastening Solutions
Our knurled screws are not just standalone parts; they are designed to integrate seamlessly with our other product lines to provide a complete solution for your projects:
Mechanical Assemblies: Paired with our [stainless steel pulleys] for quick adjustments in cable-driven systems.
Architectural Projects: Ideal for securing components in [wind dynamic walls] and decorative glass railings.
Rigging Hardware: Often used alongside our [stainless steel link chains] and [wire rope clips] for adjustable tensioning systems.
Heavy Duty Fastening: Works in conjunction with our [saddle clamps] and [expansion bolts] for comprehensive industrial pipe and structural support.
Why YouJia Metal is Your Top Supplier in China?
Dainan Factory Direct: Sourcing from the source hub ensures you get wholesale pricing and the highest material purity.
Expert Fabrication: Beyond standard screws, we provide a one-stop solution for stamping of metal parts, laser welding, and precision CNC milling.
B2B Bulk Supply: We support high-volume orders with 1000 Pcs/Pack or 1000 Pcs/Box packaging, optimized for international shipping costs.
Verified Quality: All our pulley stainless and fastener products come with Material Test Reports (MTR) for full traceability.
Frequently Asked Questions (FAQ)
Q: Can you manufacture knurled screws with a specific knurling pattern?
A: Yes. We can produce straight, diamond, or cross knurling patterns based on your technical requirements to ensure the best grip.
Q: Do you support small batch prototyping for non-standard parts?
A: Absolutely. As a customized processing specialist, we help engineering firms and R&D teams with rapid prototyping before moving to mass production.
Call to Action (CTA)
Need Custom Knurled Screws for Your Project?
Contact YouJia Metal today for a free quote on stainless steel knurled thumb screws. Send us your drawings, and we will provide the most cost-effective manufacturing solution.
WhatsApp: +86 15952693580
