Forged Products

Donhad’s Forge Division is recognised internationally as one of the world’s leading manufacturers of specialised fasteners. It manufactures specialised fasteners in plain carbon alloy and stainless steel for use in the mining, oil, and gas, general and civil engineering industries.

All head shapes, lengths, and diameters of forged products are catered for and customised for any requirement. Our machining, heat treatment and technical capabilities complement the forge operation to deliver technical products of the highest integrity.


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We manufacture any batch size and customised designs to suit customer’s needs. Donhad houses its own design and drafting team, which includes AutoCAD™, and Solidworks™ 3D capabilities. Complemented by our in-house technical service team, R&D is one of Donhad’s core competencies.

Equipment includes:

  • 1 – 3 stage 2” Upset forging machine
  • 1 – 4 stage 3” Upset forging machine
  • 1 – 4 stage 4” Upset forging machine
  • Roll Threaders
  • CNC Lathes
  • Milling machines
  • Manual lathes
  • Robotic grinding applications.

Raw materials forged include:

  • Carbon steels
  • Alloy steels
  • Stainless steels
  • Sizes ranging from 16mm – 80mm


Additional information can be found in these Technical Bulletins:


Heat Treatment

Donhad’s Heat Treatment facilities cover internal manufacturing process and also have excess capacity for external works and contracts. Our technical services laboratory complements our heat treatment plant, enabling the testing of material properties on site to ensure compliance before despatch.




Click on these following links to find out more about our heat treatment services, including furnace capacities.


Chute Liner Fastener

Donhad manufactures chute liner fasteners for retaining wear liner plates in chutes and feed bins. We have developed a product to increase the life of wear liners by reducing wear around seating. The head seating of the oval head...

Industrial Earthmoving Machinery Fasteners

Whether your equipment is in civil, mining, construction or hire, we have the right track and plough bolts to ensure your equipment maintains optimal operational up time. Donhad manufactures its specialised heavy-duty bolts and distributes a range of different...

Nuts, Washers & Accessories

Donhad’s Nyloc nuts are designed for consistent grip and hardness to ensure torque is maintained throughout the fastener’s life. The nylon has specific tolerances to ensure the grip-on bolt thread holds with integrity. Flat and recess washers are designed to...


Hardening steel is a heat treatment that has been used for centuries to increase the strength of steel. By heating steel above the critical temperature, the inherent microstructure changes to a face-centred cubic formation in the form of Austenite....


Usually, quench-hardened steel is too brittle for practical use; therefore, the technique of tempering is often employed to remove some of the excessive hardness. By heating the steel to a temperature less than that used during the hardening process...