UK Engineering Company Asks: Are these the world’s largest Hydraulic Nuts?

With an innovative in-house design team and an advanced UK manufacturing facility, it was no surprise that West Bromwich-based engineering firm, Tentec Limited won a major contract to supply 4 massive hydraulic nuts for a major forging press refurbishment project in the US.

Hydraulic nuts are a permanent form of bolt tensioning where the hydraulic nut replaces the conventional hexagon or round nut. With application of hydraulic pressure to the hydraulic nuts, bolt load is generated effortlessly and the user needs only to insert easily fitted shims to retain the bolt load. The hydraulic pressure is then released and an accurate bolt load is retained.

“When the tender specifications came in, we knew that it would be challenge.” says Paul Egginton, Engineering Director at Tentec. “The hydraulic nuts required for the project were to have 25” Buttress thread forms, each hydraulic nut weighed 4 tonnes with an 8000 tonne bolt load capacity. They would be by far the biggest hydraulic nuts we had ever manufactured.”

Quality of the manufacturing process was key to Tentec winning the tender. The company has a proven track record for the design and manufacture of large hydraulic nuts and together with the fact that the nuts would be manufactured in the UK, under strict quality controlled procedures made them the engineering company of choice for the project.

– ends –

Further Details: Paul Egginton. Tentec Ltd. Plymouth House. Guns Lane, West Bromwich, West Midlands B70 9HS. Tel: + 44 (0) 121 524 1990 Fax: + 44 (0) 121 524 1999
E-mail: Web:

UK Press Contact:
Eileen Holmes-Ievers. In Press Public Relations Ltd. St John’s Chapel, High Street, Lambourn, Berkshire. RG17 8XL. Tel. +44 (0)1488 674200
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February 29, 2012

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