Thread rolling
Cold-rolled external threads up to M64 — strong, smooth, precise and uniform forms produced with no chip loss.
Overview
Thread rolling is the preferred method for producing strong, smooth, precise and uniform external thread forms. Unlike cutting, grinding and chasing, thread rolling is a cold forging process that displaces material rather than removing it, so it can be performed on any ductile metal. The rolled thread is work-hardened with smooth, continuous-grain flanks and no chip loss, giving a stronger thread than a cut equivalent. Since 2017 we have the capacity to thread roll material up to M64, dependent on material hardness and thread pitch, on two dedicated thread rolling machines.
Typical applications
- High-strength bolt and stud threads
- Hot-forged bolt threads
- Recoverable anchor screw threads
- Tie-rod and actuator threads
- Ductile-metal fastener threads to drawing
Capability data — Thread rolling
- Machines
- 2 thread rolling machines
- Process
- Cold forging — no chip, work-hardened flanks
- Capacity
- Up to M64, dependent on material hardness and thread pitch
- Materials
- Any ductile metal — carbon, alloy and stainless steels
- Thread forms
- Metric, UN and custom external profiles
- Advantage
- Stronger, smoother, more uniform thread than cut/ground
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Recoverable roof- and side-anchor screws for underground support — engineered to be installed, loaded and withdrawn intact.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.
Hot-forged bolts
Hot-forged bolt blanks and special fasteners from forged bar, with rolled threads and full material traceability.
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.