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Servicing AD Sites Across the UK

Screw Manufacture
& Repair

Screws operating within Anaerobic Digestion (AD) plants are subjected to some of the most demanding environments in industry. At Fletch Engineering Services, we specialise in the precision manufacture, repair and refurbishment of conveyor 

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Fast response guaranteed

Precision Manufactured

We design and manufacture new screws to exact specifications, whether to OEM drawings or reverse engineered from existing components.
Each screw is engineered with careful consideration of:

Our manufacturing process ensures dimensional accuracy, structural integrity and long-term durability, helping to maximise system efficiency and reliability.

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Minimising Downtime, Maximising Performance

We understand that downtime in an AD plant Repair & Refurbishment directly impacts revenue and output. Our team works efficiently to assess, manufacture or refurbish screws with minimal disruption to your operations
Precision. Reliability. Performance.

Our vision

Whether you require a fully engineered replacement or a rapid repair turnaround, we focus on delivering durable solutions that keep your material handling and processing systems running smoothly. Our goal is simple: to provide reliable, precision-engineered screw solutions that support continuous, efficient plant operation and long-term asset performance.
Screw_3-optimized
Repair & Refurbishment
Where possible, we provide cost-effective repair solutions to extend the service life of worn screws.
Our refurbishment services may include:

By restoring critical dimensions and strengthening high-wear areas, we help reduce the need for full replacement while maintaining throughput and operational performance.

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What our clients say

Fletch Engineering turned around a critical shaft repair in days. Quality was perfect and fitted as needed. Kept our AD plant running with minimal disruption. Highly reliable team.
O BennettAD Client
We required precision parts and needed them delivered fast. Everything matched OEM spec exactly. Have to say, solid workmanship and the Fletch team are very easy to deal with. They are now our go-to service providers.
B ThompsonAD Client
Professional and knowledgeable team who managed to produce custom parts from old components with no drawings. Highly impressed with both the fit and finish, excellent company to deal with!
C FosterAD Client

Built Around Speed and Reliability

Quick Turnarounds

We focus on rapid turnaround for both manufactured components and repairs on anaerobic digestion sites. In many cases we can produce replacement parts such as digester screws in one to two weeks, compared with typical OEM lead times of twelve to fourteen weeks.

Extensive Knowledge Across Our Team

Our team has developed extensive knowledge of AD plant equipment and the challenges operators regularly face. This allows us to identify issues quickly, understand the demands placed on each component, and manufacture or repair parts with confidence.

Solutions Focused

Every plant and every piece of equipment presents slightly different challenges. Components often fail due to wear, operational conditions, or unique design characteristics.  Our approach is focused on practical problem solving. We assess the component, understand the cause of the issue, and manufacture or repair the part to ensure it performs reliably once returned to service.

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Frequently asked questions

Material type, operating conditions, abrasion levels and maintenance all play a role in how quickly a screw wears. Screws operating in harsh AD environments, especially with abrasive or inconsistent feedstock, will typically experience higher wear rates.
Reduced throughput, uneven wear on the flights, increased vibration or visible damage are common indicators. Catching these early can prevent more serious issues and costly downtime.
Yes, factors such as pitch, flight thickness and material selection all influence how efficiently a screw performs and how well it withstands wear over time.
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