Next Day Steel’s Holding Down Bolt Sets are engineered for anchoring steel columns, base plates and prefabricated frames into concrete foundations. Each complete set is manufactured from grade 8.8 high-tensile steel to BS 7419, ensuring strength, durability and compliance with UK standards.
Each assembly includes a high-tensile bolt, nut, square plate washer and waxed cone void former, everything you need for quick, accurate installation on site. The waxed cone prevents concrete adhesion and allows final alignment before grouting, saving time and reducing errors during erection.
Key Features
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Manufactured from 8.8 high-tensile steel to BS 7419.
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Includes bolt, nut, washer and tapered waxed cone.
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Square plate washer prevents bolt rotation and spreads load.
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Waxed cone creates adjustment void for accurate alignment.
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Available in M16–M30 sizes and 300–600 mm lengths.
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Galvanised and stainless-steel finishes available on request.
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Large stocks for next-day UK delivery.
FAQ
What are holding down bolt sets used for?
They secure structural steel columns, frames and machinery base plates into concrete foundations.
Why is the waxed cone important?
It forms a void around the bolt, allowing lateral adjustment during installation. Once aligned, the void is filled with grout for permanent fixing.
Are these bolts compliant with UK regulations?
Yes, all bolts are manufactured to BS 7419 in grade 8.8 high-tensile steel.
Do you supply galvanised sets?
Yes, galvanised and stainless-steel options are available, please call 020 8079 7719 for details.
