To fasten flanges and fittings inside pipes, you need various screws, washers and nuts. We offer stainless steel screws A2 with thread in sizes M10 - M30 and screws in lengths 40 - 120 mm, also steel screws with lengths 32 - 240mm. The nuts and washers are also available in both materials. Thanks to these three components, it is particularly easy to install a fitting to a flange.
thread pin M20x50 mm female hexagon head made of stainless steel A2 wrench-size SW10 acc.to ISO 4026
screw M16x85 mm hexagon head aus stainless steel A2 Schlüsselweite SW24 nach ISO 4017
screw M10x75 mm hexagon head made of stainless steel A2 wrench-size SW17 acc.to ISO 4017
screw M16x140 mm hexagon head aus steel plated Schlüsselweite SW24 nach ISO 4017
screw M20x90 mm hexagon head aus steel plated Schlüsselweite SW30 nach ISO 4017
screw M20x80 mm hexagon head aus stainless steel A2 Schlüsselweite SW30 nach ISO 4017
screw M24x110 mm hexagon head aus steel plated Schlüsselweite SW36 nach ISO 4017
screw M30x120 mm hexagon head aus stainless steel A2 Schlüsselweite SW46 nach ISO 4017
Special requests, spare parts or a quick support? Our staff will answer your questions and concerns immediately.
Mon. - Fri. from 08:30 - 17:00
Phone: +49 7143/9666-901
sales@nieruf.com
Commitment engenders trust. We stand by our word and are convinced that as a result not only our customers but also everyone we work with can rely on us.
We always strive to find the best solution for our customers. It is our goal and incentive to have completely satisfied customers.
Technical and commercial expertise form the basis for developing qualified solutions tailored precisely to the needs of our customers.
We do not adhere to rigid guidelines but instead focus on the individual wishes and needs of our customers. They are more important to us than internal company processes.
Contact For all questions we are available by phone
Mo - Fr 08:30 - 17:00
or send us an e-mail:
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Frequently asked questions 
Configurator 
Angle seat valves
Ball valves
Butterfly valves
Check valves
Coaxial valves
Compensators
DISCO check valves
Diaphragm valve
Flow control valve
Gate valves
Globe valves
Knife gate valve
Manometer gauge valve
Needle valves
Overflow valves
Pressure reducing valves
Safety valves
Sight glass
Solenoid valve
Stainless steel hoses
Strainer
Vent-valve
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If you have any questions, we are available by phone from Monday to Friday from 8:30 a.m. to 5:00 p.m.
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