High quality, low lead times

Wire thread inserts are a high performance fastening solution manufactured from aircraft quality stainless steel wire. Available from stock in a huge range of sizes, thread forms, and alternative materials.

Thread repair and maintenance

Perfect for vehicle maintenance and MRO work, our popular single size thread repair kits are an easy solution for the repair and restoration of worn, damaged, and stripped threads.

Precision cutting

Manufactured from High Speed Steel, our hand and machine wire insert taps produce close tolerance tapped holes in accordance with all internationally recognised wire insert standards.

Tools for every need

Want a pre-wind tool to install screw locking inserts? Looking for a power tool to speed up installation? Need an extractor tool to remove inserts? We’ve got the right tools for the job.

Discover the right wire insert for your needs

WTI Fasteners

We are WTI Fasteners, a world-leading British manufacturer of wire thread inserts with over 30 years’ experience in the fastener industry. Our helically-coiled wire inserts are manufactured to aerospace standards in accordance with AS9100 Rev D, and are supplied to OEMs and distributors in a diverse range of industries worldwide.

Our high performance, fully traceable wire inserts are manufactured in a wide range of sizes in metric coarse and fine, UNF, UNC, BSF, BSW, BSP, BA, BSC, and NPT. Made from A2/304 stainless steel as standard, alternative available materials include A4/316 stainless steel and phosphor bronze, and we are also able to have special platings, finishes, and colours applied to the inserts where required.

We also stock a vast range of associated tooling to suit, including wire insert taps, manual and power installation tools, thread repair kits, extractor tools, and much more.

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Wire Threads

The Industries
we supply to worldwide

WTI has served a global supply chain across 67 countries for over 30 years, with our high-performance wire inserts – manufactured in accordance with a variety of national and international standards – being used in everything from satellites to children’s toys.

Aerospace

Reliable, high quality, and fully traceable, WTI inserts are manufactured to aerospace standards in accordance with AS9100 Rev D.

Automotive

Lighter than equivalent fasteners, wire inserts are a weight-saving solution without sacrificing thread strength.

Precision Casting

Stainless steel inserts can withstand temperatures ranging from -160°C to +420°C without detriment to its properties.

Rail

Wire inserts offer excellent corrosion- and wear-resistance, preventing adverse seizing and galling and virtually eliminating friction-induced thread erosion.

We are specialist
suppliers in

10+

industries

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Why companies all over the world choose WTI Fasteners

Stock availability

Huge on-site inventory of a wide range of products.

Low lead times

97% same day despatch on stock items.

No minimums

No minimum order charges or quantities on standard parts.

Made to order

We can work with you to make the special size of insert you need.

Delivery options

Range of next day and timed deliveries available, as well as direct-to-customer shipping.

Technical support

Expert technical support from experienced engineers and support staff.

Accreditations

  • BSI AS/EN 9100 Series Aerospace
  • Aerospace Sector Certification Scheme
  • Certified ISO Company
  • AS9100D Certified ISO 9001