Thread Reducer Insert - Steel - M20 to M16
Ideal for reducing the thread size of an existing tapped hole
From £24.17 per pack£29.00 inc. VAT
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Our mild steel thread reducer inserts provide a fast, reliable, and economical way to repair damaged or stripped threads, or to reduce the thread size of a pre-drilled hole. Perfect for thread size conversion, these precision-engineered components allow larger threaded holes to accept smaller fasteners, giving maximum flexibility in both design and repair applications.
Manufactured from high-quality mild steel and finished in a RoHS compliant Cr3 clear plating, these inserts deliver excellent strength and machinability, making them ideal for applications where corrosion resistance is not a primary concern. They’re a cost-effective choice for use in dry, indoor, or controlled environments such as general engineering, manufacturing, and machinery maintenance. Easy to install and built for durability, our thread reducer inserts help reinforce weaker threads in softer materials like aluminium, brass, and hard plastics, ensuring secure and long-lasting fastenings.
If you require enhanced corrosion resistance for demanding or outdoor environments, view our A2 Stainless Steel Thread Reducer Inserts — designed for superior durability and protection against moisture and harsh chemicals.
Each insert is precision-engineered and manufactured in the UK, ensuring consistent quality and dimensional accuracy. Local manufacturing supports sustainable production, reduces environmental impact, and ensures shorter lead times with dependable supply — giving you high-quality inserts you can trust at a competitive price.
Not included in our volume discount
Manufactured from high-quality mild steel and finished in a RoHS compliant Cr3 clear plating, these inserts deliver excellent strength and machinability, making them ideal for applications where corrosion resistance is not a primary concern. They’re a cost-effective choice for use in dry, indoor, or controlled environments such as general engineering, manufacturing, and machinery maintenance. Easy to install and built for durability, our thread reducer inserts help reinforce weaker threads in softer materials like aluminium, brass, and hard plastics, ensuring secure and long-lasting fastenings.
If you require enhanced corrosion resistance for demanding or outdoor environments, view our A2 Stainless Steel Thread Reducer Inserts — designed for superior durability and protection against moisture and harsh chemicals.
Each insert is precision-engineered and manufactured in the UK, ensuring consistent quality and dimensional accuracy. Local manufacturing supports sustainable production, reduces environmental impact, and ensures shorter lead times with dependable supply — giving you high-quality inserts you can trust at a competitive price.
Not included in our volume discount
| Thread Size: | M16 (reduced from M20) |
| Pitch Size: | Internal - 2.00mm |
| Pitch Size: | External - 2.50mm |
| Dimension (D): | 20.00mm |
| Dimension (L): | 16.00mm |
| Material: | Mild Steel |
| Finish: | Clear Zinc Trivalent Chromium Plated (Cr3) |