B 53030

U-NUT® self-locking nuts

with metric regular thread
Flange/washer: without flange | Thread type: Metric standard thread | Material: Stainless steel A2 | Product group: Nuts
Diameter (d)
M4
M5
M6
M8
M10
M12
M16
Packaging unit (pcs.)
150
400
600
1000
1500
2500
For further information please contact us.
Böllhoff standard 53051 | Nut material: stainless steel A2 | Material insert: stainless steel | Cr(VI)-free | metric regular thread

Premium safety for your threaded connection. U-NUT® nuts are a reliable and proven solution for all applications where the screws play a crucial role in ensuring function and safety and where it is essential to prevent the preload force from being lost and the connection from falling apart.

The integrated sheet metal spring ensures that the U-NUT® nut maintains a consistent and controlled clamping force on the thread and that a certain amount of preload force always remains in the connection. Even under maximum loads. The geometry is precisely matched to the screw thread so that repeated tightening is consistently possible without any problems. Since the effectiveness of U-NUT® nuts does not depend on a defined high level of preload force, they are suitable for use with preloaded connections as well as with soft components and can be assembled with simple tools. U-NUT® will always secure your connection.

Benefits:
• thread clamping for maximum safety
• easy to assemble
• excellent refastening properties
• temperature and UV-stable compared to conventional locknuts with PA ring

Application examples:
• robotics
• motors
• pumps
• elevators
• machining
Material version:
A2
Cr(VI) Note:
Cr(VI)-free
Flange/washer:
without flange
Risk hydrogen embrittlement:
Thread type:
Metric standard thread
Material:
Stainless steel A2
Application:
Joining by bolt, joining by stud
Product type:
with locking element
Product group:
Nuts
RoHS conformal:
Material:
Stainless steel
Fastening and assembly technology: Products and services
PDF
ENG
1180/21-V1-EN (WBH)
U-NUT®: Maximum security for your screw connection
PDF
ENG
8060/21-V2-EN (WBH)
Data sheet: Technical information and dimensions of the product
PDF
ENG
02/2024
The Manual of fastening Technology: 8th edition
PDF
ENG
8100/23-V1-EN (WBH)