Hot-forged bolts
Hot-forged bolt blanks and special fasteners from forged bar, with rolled threads and full material traceability.
Overview
Hot-forged bolts are produced by forging the head from heated bar stock, then machining and thread-rolling the shank to drawing. Forging the head gives a continuous grain flow from head to shank that is stronger than a machined-from-bar equivalent, making the process suited to high-strength and special-head fasteners that off-the-shelf stock cannot supply. We forge, machine and thread in-house and route heat treatment through trusted specialist partners, managing the full process so every lot ships with complete traceability.
Typical applications
- Structural high-strength bolts
- Railway track fasteners
- Mining and plant special fasteners
- T-head and flanged specials
- Long-shank forged bolts
Capability data — Hot-forged bolts
- Process
- Hot forge head → machine shank → roll thread
- Diameter
- M12–M48 typical, larger specials on request
- Head styles
- Hex, square, flanged, T-head and specials to drawing
- Strength
- Forged grain flow; heat-treated to required property grade
- Threads
- Rolled or whirled to drawing
- Certification
- Full material traceability, EN 10204 3.1 certs
Also in-house
CNC milling
3-, 4- and 5-axis milling of prismatic and complex parts, from prototypes to 100k-part production runs.
CNC turning
Bar-fed and chucking lathes with live tooling for shafts, pins, bushings and rotational parts up to Ø600 mm — 480 000+ parts per year.
Forging
Closed-die and upset forging with in-house die design and machining; larger forgings and heat treatment routed through trusted specialist partners.
Insulated railway joints
Manufactured insulated rail joints for track circuits and signalling isolation, built to take repeated wheel loads.
Recoverable anchor screws
Recoverable roof- and side-anchor screws for underground support — engineered to be installed, loaded and withdrawn intact.
Thread whirling
Whirling of high-quality heavy-duty threads — typically acme or trapezoidal — on long lengths from Ø25 to Ø105 mm, up to 2.2 m.
Thread rolling
Cold-rolled external threads up to M64 — strong, smooth, precise and uniform forms produced with no chip loss.
Toolmaking
Design, manufacture and maintenance of dies, fixtures, jigs and gauges — the tooling that keeps production running.
Industrial fasteners / thread machining
Standard and special industrial fasteners from 20 mm diameter up, with thread machining — cutting, chasing and grinding — to drawing.