Products
Custom studs, made to your drawing
HAGUE FASTENERS makes custom studs to order in the UK: stud bolts, engineer studs, waisted studs, wheel studs and tie bars, made to your drawing or the standard you specify, from small automotive studs to large high pressure turbine casing studs for power stations.
1971
Making custom studs since
1 to 500
A single piece to batches of several hundred
5 types
Stud bolts, engineer, waisted, wheel studs and tie bars
PED
2014/68/EU approval for pressure equipment
Studs and studbolts
Custom studs for flanges, casings and machinery
HAGUE FASTENERS has made custom studs since 1971: stud bolts, engineer studs, waisted studs, wheel studs and tie bars, made to your drawing or the standard you specify. We make them in our own facility in Willenhall, in batches from a single piece to several hundred.
Automatic bar work suits batches of studs, while CNC and conventional lathes handle large one-offs and long threads. Studs are often supplied with matching nuts and washers as a traceable set.
Types
Types of custom studs we make
Stud bolts
Threaded along their full length, used with two nuts on flanges, pressure vessels and pipework.
Engineer studs
Threaded at each end with a plain shank, one end screwed into a tapped hole.
Waisted studs
Shank reduced below the thread diameter to add elasticity, for fatigue and high temperature joints such as turbine casings.
Wheel studs
Hold wheels on vehicles; we make them with splines or milled flats to drawing.
Tie bars
Long threaded bars for structural and plant applications.
Materials and finishes
Grades, threads and testing
See all fastener materials and special fastener coatings.
Materials and grades
- ASTM A193 B7, B16 and A320 L7
- High temperature grades including Durehete 1055 and A453 660
- Stainless steels such as B8 and B8M
- Super duplex S32750 and S32760
- Inconel, Monel and Hastelloy
- Bar from UK, EU and US mills with full certification
Threads, finishes and testing
- Metric coarse and fine, UNC, UNF and 8UN, BSW, BSF and special thread forms
- Cut or rolled threads, including long threads
- Zinc flake, zinc nickel, electroless nickel and PTFE fluoropolymer
- Heat treatment, NDT and independent UKAS-accredited testing
- EN 10204 3.1 and 3.2 certificates
- Laser marking of heat codes or part numbers
Industries
Where our studs are used
Our studs are used in oil and gas, power generation, nuclear, shipbuilding, transport and many other industries where a standard stud is not good enough.
- Oil and gas flanges, subsea and topside
- Power generation turbine casing studs
- Nuclear QC1 safety-critical studs
- Shipbuilding and marine
- Transport wheel studs and specials
Questions
Frequently asked questions
What is the difference between a stud bolt and an engineer stud?
A stud bolt is threaded along its full length and used with a nut at each end. An engineer stud has a thread at each end with a plain section between, and one end is screwed into a tapped hole.
Can you make custom studs in small quantities?
Yes. We make custom studs from a single piece, such as a breakdown replacement, to batches of several hundred.
Why are turbine casing studs waisted?
Reducing the shank below the thread diameter makes the stud more elastic, so it holds its preload better under fatigue and high temperature.
Can you copy a part from a sample?
Yes. Send a photograph beside a rule for a quick estimate, then the sample, and we can arrange collection for large items. We can replicate it, with an upgraded material, length or thread form if needed.
Do you make studs to PED requirements?
Yes. We make pressure equipment fasteners under our BSI PED 2014/68/EU approval. See PED fasteners.
Useful tools
Free engineering tools
- Stud bolt weight calculator: weigh studs and nuts for one piece or a whole order, in kg and lb.
- Bolt torque calculator: tightening torque and preload for metric, UNC, UNF, BSW and BSF threads.
- Material equivalents finder: find the EN, UNS, ASTM, BS and JIS equivalents of a grade, such as 1.4462 or 316.
- Thread size chart and identifier: pitch, diameters, stress area and tapping drill, or identify an unknown thread.
Free to use, no sign-up. See all our engineering tools.
Stud enquiry?
Send us your drawing, specification or sample
Tell us the type, size, grade, quantity and documentation you need and we will come back to you quickly.