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19
+
YEARS OF EXPERIENCE
3000㎡+
FLOOR SPACE
160
+
MACHINERY EQUIPMENT
3500
+
SATISFIED CUSTOMERS
Zeyao - A Leading Screw Manufacturer in China
With 19 years of experience in fastener manufacturing, Zeyao is a leading screw manufacturer in China. Our factory is equipped with over 160 advanced production machines, boasting a monthly production capacity exceeding ten million pieces, enabling us to meet large-volume order requirements.
Zeyao focuses on the research and manufacturing of high-quality screws and also supports OEM/ODM customization services. We can provide special specifications, materials, surface treatments, and brand logo labeling according to customer requirements. With our extensive experience and comprehensive production capabilities, Zeyao has become a reliable fastener partner for customers in the construction, machinery, electronics, automotive, and many other industries.
Knurled Head Thumb Screws are specially designed manual fasteners that combine efficient locking with convenient operation. Their knurled heads and central through-holes offer multiple advantages, including secure locking, easy manual tightening, and resistance to loosening.
Product Features:
1. Knurled Head Design
The knurled texture provides excellent grip, allowing for easy tightening or loosening of the screw even with wet hands or while wearing gloves, eliminating the need for wrenches or screwdrivers.
2. Central Through-Hole for Enhanced Locking Performance
The central through-hole in the head not only allows for the insertion of locking wires but also improves thread locking effectiveness. In vibrating environments, such as in automobiles, aircraft, or machinery, the through-hole design effectively prevents the nut from loosening, maintaining the long-term stability of the assembly.
3. High-Strength Material
The knurled head thumb screws are made of carbon steel, offering good tensile strength and corrosion resistance. Some models are available in aluminum alloy for lightweight applications while maintaining sufficient mechanical strength.
4. Versatile Applications
These screws can be used not only for fixing structural components but also as adjustment components.
5. Compatible with Locking Devices
The central through-hole design facilitates the use of locking wires or safety wires, improving safety and reliability and preventing parts from loosening or falling off in high-vibration or high-speed operating environments.
Specification
|
d |
Pitch |
Thread Length |
D |
h |
||
|
Max |
Min |
Max |
Min |
|||
|
M3 |
0.5 |
6/8/10/12 |
10.1 |
9.9 |
6.1 |
5.9 |
|
M4 |
0.7 |
6/8/10/12 |
12.1 |
11.9 |
7.1 |
6.9 |
|
M5 |
0.8 |
6/8/10/12 |
14.1 |
13.9 |
8.1 |
7.9 |
|
M6 |
1 |
8/10/12/14 |
14.1 |
13.9 |
8.1 |
7.9 |
Product Picture
Measuring tools
Choose high-quality knurled head thumb screws to make your equipment safer and more reliable! Contact us today for detailed specifications, bulk pricing, and custom services, and give your project a head start right from the component level.
Custom Service
With 18 years in the fastener industry, Zeyao Hardware specializes in manufacturing custom fasteners, including screws, bolts, nuts, and more. We offer tailored solutions to meet your specific needs, ensuring high-quality, reliable products every time.
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