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Plugs & Stoppers
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Business Services
- Terms and conditions
Quantity | Unit Price (ex. VAT) |
Unit Price (inc. VAT) |
---|---|---|
0 - 2 | £0.47 | £0.47 |
2 - 99 | £0.40 | £0.40 |
100 - 249 | £0.37 | £0.37 |
250 - 499 | £0.33 | £0.33 |
500 - 999 | £0.30 | £0.30 |
1000 + | £0.27 | £0.27 |
Product Stock

Product Specifications
SQT002- Thread Size
- M6
- Material
- LDPE
- Colour
- Black
- Outside Diameter
- 20mm x 20mm
- Wall Thickness
- 1.0 - 1.5mm

Same Day Dispatch Available
| Order by 4.00pm (UK) for same day dispatch (Monday – Thursday, 2.00pm Friday). Next Day or Standard Delivery available via DHL or Royal Mail.
Frequently Bought Together

Specifications
Base Diameter | 38mm |
Thread Size | M6 |
Base Height | 16mm |
Thread Length | 25mm |
Base Colour | Black |

Specifications
Base Diameter | 25mm |
Thread Size | M6 x 20mm |
Material | Polypropylene & Steel |
Weight Rating | N/A |
Colour | Black |

Specifications
Base Diameter | 15mm |
Thread Size | M6 |
Stud Length | 13mm |
Base Height | 6mm |
Material | Polyethylene |
Total Price: £0.00
Product Description
M6 x 20mm x 20mm - Square Threaded Tube Insert - Black - LDPE | Vital Parts (SQT002)
Our Square Threaded Tube Insert is a high-quality component designed to create a strong and reliable threaded connection within square tubes, pipes, and box sections. These inserts are widely used in industries requiring adjustable components, such as furniture manufacturing, industrial equipment, and structural frameworks. By providing an internal metal thread, this insert allows the easy attachment of external fittings like adjustable feet, castor wheels, and levelling components.
What is the Square Threaded Tube Insert?
The Square Threaded Tube Insert is a precision-engineered fitting designed for insertion into the ends of square tubing. Its primary function is to provide an internally threaded connection point, enabling the easy attachment of external accessories. These inserts serve as essential components in the construction, furniture, and manufacturing industries, allowing structures to be adjustable, mobile, or securely fixed.
Unlike standard plastic end caps, threaded tube inserts offer superior functionality by integrating a robust metal thread, ensuring a secure hold for screws, bolts, and levelling feet. The ribbed exterior design helps the insert fit tightly within the tube, preventing unwanted movement or loosening over time. Thanks to its durable construction and ease of installation, this insert is a cost-effective solution for any setup requiring adjustable fittings.
Key Features:
- Outside Diameter : 20mm x 20mm
- Wall Thickness : 1.0 - 1.5mm
- Built-in M6 metal thread for secure and stable external attachments.
- Manufactured from high-quality materials for long-term durability.
- Push-fit ribbed design ensures a firm grip and prevents movement.
- Ideal for use in industrial, commercial, and furniture applications.
- Available in a black finish, blending seamlessly with most designs.
Applications:
Our Square Threaded Tube Inserts are commonly used in various industries where secure threaded connections are required. Key applications include:
- Furniture Manufacturing - Ideal for adjustable feet, chair legs, and desk frames.
- Industrial Machinery - Provides secure attachment points for heavy-duty levelling components.
- Retail Displays - Ensures stable and adjustable shelving units.
- Construction and Engineering - Supports mobile structures and height-adjustable platforms.
- Automotive and Transport - Used in vehicle modifications and structural reinforcements.
Benefits:
- Enhances stability when used with levelling feet, castors, or support structures.
- Protects the interior of square tubes from dust, debris, and moisture.
- Increases the lifespan of tubing by reducing wear and tear.
- Provides a secure, non-slip fit due to its ribbed push-in design.
- Quick and easy installation - No special tools required.
Why Choose Square Threaded Tube Inserts?
Choosing the right insert is essential for ensuring a reliable connection in your square tubing structures. The Square Threaded Tube Insert offers a perfect balance of durability, ease of installation, and strong hold, making it a preferred choice for professionals across various industries. Its high-quality design ensures long-lasting performance, reducing the need for replacements and maintenance.
Whether you're upgrading furniture, securing industrial equipment, or enhancing the mobility of a structure, our threaded tube inserts provide a cost-effective solution. By integrating metal threads within plastic bodies, they combine strength with flexibility, offering superior adaptability to different applications.
Why Buy from Vital Parts?
As a trusted UK supplier of high-quality fasteners and industrial components, Vital Parts offers a customer-first experience with benefits that include:
- Same-Day Dispatch: Fast and reliable shipping to keep your projects on track.
- Competitive Trade Pricing: Enjoy bulk discounts on larger orders to save more.
- Expert Technical Support: Our knowledgeable team is here to help with product selection and application advice.
Our Square Threaded Tube Insert is a practical and reliable solution for adding adjustability, stability, and security to square tubing structures. With its M6 threaded metal core, ribbed push-fit design, and high-quality material, this insert guarantees a strong and durable connection for a variety of applications.
For expert advice on selecting the right insert for your needs, contact our support team today at 01233 713581. We also offer free samples to help you find the perfect fit for your application.
Related Products
Code | Thread Size | Material | Colour | Outside Diameter | Wall Thickness | Stock | |
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SQT001 | M6 | LDPE | Black | 19mm x 19mm | 1.0 - 1.5mm |
In Stock
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SQT003 | M8 | LDPE | Black | 20mm x 20mm | 1.0 - 1.5mm |
In Stock
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SQT004 | M6 | LDPE | Black | 25mm x 25mm | 1.0 - 1.5mm |
In Stock
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SQT005 | M8 | LDPE | Black | 25mm x 25mm | 1.0 - 1.2mm |
In Stock
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SQT006 | M8 | LDPE | Black | 30mm x 30mm | 1.0 - 1.5mm |
In Stock
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SQT007 | M10 | LDPE | Black | 30mm x 30mm | 1.0 - 1.5mm |
In Stock
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