Special fasteners
for the most demanding applications.
Special fasteners, bolts, nuts and turned parts to drawing or standard. Forged, turned, rolled and tested in Hagen, with EN 10204 3.1 or 3.2 inspection certificates from our own laboratory.
M4 to M180
Rolled threads, including after quenching and tempering
300 mm and 3,500 mm
Maximum diameter and length of turned parts
Inspection certificates 3.1 and 3.2
In-house materials laboratory, third-party inspection on site
Express service
Response within a few hours
Why RS Randack
Everything from a single source,
right through to the inspection certificate
At RS Randack, forge, CNC machining, thread rolling, nut machining, toolmaking and our own materials laboratory are all under one roof. This means special fasteners to drawing are made without detours via several companies, with a 3.1 or 3.2 inspection certificate and short lines of communication for every query. Urgent? You will hear from us within a few hours. That is why buyers in plant engineering, energy, shipbuilding, rail and mining turn to Hagen when standard parts fall short.
Product range
Our products
Hot-forged parts
Robust forgings for high loads and demanding applications.
Studs & bolts
Custom-made bolts to standard, drawing or specification.
Cold-formed parts
Precision cold-formed parts for cost-efficient, durable solutions.
Turned parts
Dimensionally accurate turned parts for technical and industrial applications.
Assemblies
Assembled units for complex requirements, from a single source.
More product examples
A wide variety of fasteners for special applications.
Industries
Where our fasteners are used
From high-pressure reactors to ship propellers: every industry has its own codes, materials and certification requirements. Here is what RS Randack supplies for each of them.
- 01Plant engineering, chemicals and pressure equipmentFlanged joints that stay leak-tight under pressure and temperature→
- 02Energy and power plant engineeringConventional power plants: reduced-shank bolts and casing bolts for steam, gas and hydro turbines and generators→
- 03Shipbuilding & MarinePropellers, rudders, shafts and couplings with class certificate→
- 04Railway and rolling stockHigh-strength bolted joints for bogies, couplers and drives→
- 05MiningLarge high-strength bolts for crushers, mills and excavators→
- 06AerospaceTo customer specification, with first article inspection and complete documentation→
- 07Power transmission and mechanical engineeringFitted bolts, reduced-shank bolts and socket head cap screws for couplings, gearboxes and presses→
- 08Oil and gas, offshoreStud bolts for flanges, drilling equipment and platforms→
- 09Nuclear technologyNuclear power plants, decommissioning and interim storage: to KTA 1401, with our own qualification certificate and documentation for each size→
- 10Steel construction and infrastructureCE-marked bolting assemblies, anchor bolts and large-diameter bolts for bridges, tunnels and industrial buildings→
Reliable solutions for your procurement
Why customers trust RS Randack
Express service
Response within a few hours, in many cases delivery within 24 hours.
Worldwide delivery
Our own lorry for regional deliveries, freight forwarders and parcel services worldwide.
Sub-assembly service
Our sub-assembly service reduces your effort and the number of suppliers you deal with.
Industries
Plant engineering, energy, shipbuilding, rail, mining, aerospace, mechanical engineering: see all industries.
Certified quality
Our certifications
AD 2000 Merkblatt W0
Approved material manufacturer
EN 764-5
Materials for pressure equipment
2014/68/EU
Pressure equipment
KTA 1401
Nuclear technology
ISO 14001:2015
DIN EN 15048-1:2016
Structural bolting assemblies
ISO 9001:2015
Quality management
BV MODE II
Marine & Offshore
DNV
Manufacturer approval
A look inside
Specialists in special fasteners
About RS Randack
Production
Cutting, forging, toolmaking, CNC machining, thread rolling, nut machining, testing and shipping under one roof: the ten steps from bar stock to tested fastener.
Inside our production
Company video
We are happy to help with any questions
Frequently asked questions
Your questions answered
Which fasteners does RS Randack manufacture?
Special fasteners, studs, hex bolts and socket head cap screws, reduced-shank bolts to DIN 2510, stud bolts with UN and UNR threads, bolts, threaded rods, special nuts and turned parts to drawing or standard, typically up to 300 mm diameter, 3,500 mm length and thread size M180, larger sizes on request.
What is the minimum order quantity?
One piece. Small series from a few to several thousand pieces are our day-to-day business; our own forge with in-house toolmaking makes even new head shapes economical in small batches.
How quickly can RS Randack deliver?
You will hear from us within a few hours. In many cases, delivery within 24 hours is possible. Common materials are kept in stock.
Which certificates and third-party inspections are available?
Certificates 2.1, 2.2, 3.1 and 3.2 to EN 10204. Third-party inspections by all common inspection bodies and classification societies, including TÜV, DNV, Bureau Veritas, Lloyd’s Register and ABS, take place regularly in our own materials laboratory in Hagen.
Which materials does RS Randack work with?
Including quenched and tempered steels such as 42CrMo4 and 30CrNiMo8, creep-resistant steels such as 21CrMoV5-7 and 40CrMoV4-6, high-temperature and stainless steels, duplex, nickel-based alloys, titanium and American grades such as B7, L7 and B16: over 1,000 material grades in total to standard and customer specification, from European mills with mill certificate.
Which approvals does RS Randack hold?
AD 2000 W0 and EN 764-5 with the Pressure Equipment Directive, KTA 1401 for nuclear technology, Bureau Veritas Mode II and DNV for shipbuilding and offshore, EN 15048-1 with CE marking, ISO 9001 and ISO 14001. All certificates with their validity periods are available under Quality and in the Downloads section.
Send us your enquiry for special fasteners to standard or drawing
Urgent? You will hear from us within a few hours.
