For nearly 20 years, Hydrobolt Group has offered ASTM petro-chemical grade studbolts assemblies and other fasteners from stock.


We hold one of the largest inventories (£5m+) of fully certified ASTM fasteners in Europe.

The stock is main focused on studbolt assemblies but there's also a large range of other finished and semi-finished fasteners too (hex bolts, socket products, nuts...).

Materials range from carbon and stainless steel (class 1 & 2) to the more exotic grades such as duplex, super duplex and 660.

By reacting quickly to customer enquiries and by utilising our FAST TRACK system, goods can be shipped same or next day.

All stock is fully tracable and controlled in real-time by the company's ERP system


When specified, fasteners can be supplied in accordance with the European Pressure Equipment Directive (PED) 97/23/EC Annex 1 paragraph 4.3.

View PED cert