B 53030

U-NUT® self-locking nuts

with metric regular thread
Surface: zinc-plated | Thread type: Metric standard thread | Product group: Nuts | Flange/washer: without flange | Material: Steel 8
Diameter (d)
M5
M6
M8
M10
M12
M16
M20
M24
Packaging unit (pcs.)
65
120
150
400
600
1000
1500
2500
Please select a version to see prices and availability.
Böllhoff standard 53030 | Nut material: S45C | Zinc-plated | Material insert: stainless steel | Cr(VI) - free | Metric regular thread

Highest security 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 possible throughout without any problems. The effectiveness of the U-NUT® is not dependent on a defined, high level of pre-tensioning force, so the nut is well-suited to planned pre-tensioned connections as well as for soft components and assembly 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
Risk hydrogen embrittlement:
Product type:
with locking element
RoHS conformal:
Surface:
zinc-plated
Cr(VI) Note:
Cr(VI)-free
Application:
Joining by bolt, joining by stud
Material version:
S45C
Product group:
Nuts
Thread type:
Metric standard thread
Material:
Steel
Material:
Steel 8
Flange/washer:
without flange

All technical data refer to the measure mm

Fastening and assembly technology: Products and services
PDF
ENG
1180/21-V1-EN (WBH)
The Manual of fastening Technology: 8th edition
PDF
ENG
8100/23-V1-EN (WBH)
Data sheet: Technical information and dimensions of the product
PDF
ENG
02/2024
U-NUT®: Maximum security for your screw connection
PDF
ENG
8060/21-V2-EN (WBH)