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The Range£35.55Visit shop Unifix Steel Shouldered Thumbscrews Bzp M6 X 40 - Retail Pack - Box Of 250 - Grey
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The Unifix Shouldered Thumbscrews (M6 x 40) are designed for DIY enthusiasts and professionals seeking a reliable, tool-free fastening solution for furniture assembly and machinery maintenance. These screws offer the primary benefit of quick manual installation and removal, though they are best suited for light-to-medium duty applications where high-torque power tools are not required.
| Colour | Grey |
|---|---|
| Model Part Number | 1262814 |
| Brand | Unifix |
While they are sturdy, they are intended primarily for indoor furniture and machinery applications; always check for rust if exposed to moisture.
No, these are designed specifically for manual tightening and loosening. Power tools may damage the thumb head.
M6 refers to the 6mm diameter of the thread, and 40 denotes the 40mm length of the screw shaft.
They can be used with a matching M6 nut or directly into pre-tapped M6 threaded holes.
These are high-quality shouldered screws designed by Unifix for reliable mechanical fastening.
Check for debris in the threaded hole or ensure the screw is perfectly aligned to avoid cross-threading.
Ensure the shoulder is seated firmly against the surface. If vibration is present, consider using a rubber washer to increase friction.
Verify your project requires M6 threads; if the hole is smaller, the screw will not engage.
Before installation, ensure that your receiving hole or threaded insert is M6 sized to prevent stripping threads. These screws are designed for manual use; avoid using pliers or wrenches, as these may damage the thumb-grip surface. To maintain performance, keep the threads clean of debris and grit. If the screw becomes difficult to turn, ensure it is properly aligned with the thread path to avoid cross-threading. When not in use, store them in a dry environment to prevent surface corrosion, even though the robust design is built for long-term reliability.
