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Stainless steel thumb screws, also known as hand-tightening screws, are fasteners that can be tightened and loosened manually without tools. They are widely used in electronic equipment, mechanical equipment, communication devices, automotive parts, and structural components that require frequent adjustment or disassembly.
Product Parameters
|
Item |
Description (Customizable per client drawing) |
|
Product Name |
Stainless Steel Thumb Screw |
|
Material |
SS304 Stainless Steel |
|
Manufacturer |
Zeyao |
|
MOQ |
Negotiable |
|
Thread Size |
Metric: M3, M4, M5, M6, M8, M10 |
|
Thread Type |
Full thread / Half thread, coarse or fine thread available |
|
Thread Precision |
Grade 6g/6H (Precision grade) |
|
Head Style |
Large round head, knurled head, wing head, low-profile head |
|
Surface Finish |
Natural stainless steel, polished, electro-polished, passivated |
|
Length Range |
6 mm – 80 mm (longer lengths available upon request) |
|
Hardness |
HV 200–260 (varies by material grade) |
|
Standards |
DIN 464 / DIN 653 / GB / ISO or customized standards |
Specification

|
d |
P - pitch |
dk - min |
dk - max |
k - min |
k - max |
k1 |
k2 |
d2 |
ds |
|
M3 |
0.5 |
10.73 |
11 |
6.78 |
7 |
2.8 |
1.2 |
5.2 |
6 |
|
M4 |
0.7 |
11.73 |
12 |
7.78 |
8 |
3 |
1.5 |
6.4 |
8 |
|
M5 |
0.8 |
15.73 |
16 |
9.78 |
10 |
4 |
2 |
9 |
10 |
|
M6 |
1 |
19.67 |
20 |
11.57 |
12 |
5 |
2.5 |
11 |
12 |
|
M8 |
1.25 |
23.67 |
24 |
15.57 |
16 |
6 |
3 |
13 |
16 |
|
M10 |
1.5 |
29.67 |
30 |
19.48 |
20 |
8 |
3.8 |
17.5 |
20 |
Product Picture





Product Features
1. Tool-Free, Easy Hand-Tightening Design
The stainless steel thumb screw features an enlarged head with a knurled, anti-slip texture, allowing users to tighten or loosen it directly by hand-no wrench or screwdriver needed.
Large-diameter head provides a bigger gripping area for your fingers.
Knurled pattern increases friction for better grip, even with wet hands or gloves.
Ideal for applications requiring frequent removal or quick adjustments, such as equipment panels, instrument covers, and mounting fixtures.
2. Made From Stainless Steel
Manufactured from 304 stainless steel, the screw offers excellent corrosion resistance and is suitable for humid environments, outdoor use, and mild chemical exposure.
Resists rust and won't corrode due to moisture or sweat.
Contains molybdenum, delivering better performance in seaside or high-salt environments.
Maintains a clean, bright appearance over time-perfect for devices where aesthetics matter.
3. Precision-Machined Threads
These thumb screws are crafted using precision turning or thread-rolling processes to ensure consistent tooth shape, accurate pitch, and high strength.
Easily threads into corresponding holes with no binding or sticking.
Withstands repeated installation without damaging the threads.
Rolled threads offer superior strength, better tensile resistance, and improved shear performance.
4. Multiple Head Styles Available
Customers can choose the head style that best fits their product design and application:
Knurled Head: The most common option with excellent anti-slip performance.
Wing Head: Offers the highest hand-torque, suitable for applications requiring stronger tightening.
Flat Head: Clean and minimal look, great for visible exterior surfaces.
Plastic Head + Stainless Steel Core: Comfortable to grip, ideal for home appliances and furniture.
Different head types make these thumb screws suitable for electronics, machinery, lab equipment, lighting products, display stands, and more.
5. Durable and Long-Lasting
The stainless steel construction maintains great metal integrity after machining, providing both high strength and good toughness.
Performs well even in low-temperature environments without becoming brittle.
Resists loosening or deforming under pressure or vibration.
Long service life-much longer than standard carbon steel screws.
6. Premium Appearance
These stainless steel thumb screws feature polished or brushed finishes for a clean, bright look that won't rust or oxidize easily.
Suitable for use as visible hardware components.
Commonly used in instrument housings, display equipment, audio-video products, and photography gear.
Enhances overall product quality and brand image.
7. OEM Customization Available
Stainless steel thumb screws can be customized to match specific customer needs:
Thread diameter and length (metric or inch)
Head shape and knurling pattern
Material options (304, 316, etc.)
Surface finishes (polished, electro-polished, brushed)
Customized packaging options
Suitable for a wide range of industries including machinery, electronics, appliances, lighting, and furniture.
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