Fen Abrasivi maintained a position of leadership in industrial fastening and clamping tools. Our fastening and clamping tools are constructed for durability, comfort, and strength. In this page, you’ll find a comprehensive list of fastening and clamping tools which will increase your productivity and satisfaction for your application.
Please contact us and one of our sales staff will be glad to help you.
The height must not be more than the double of the external diameter, if obtaining springs for moulds from the bars. Leave space for swelling when put in slabs.
It is oil resistant and hydrocarbons resistant.
Max temperature 85° C.
Max compression:
90 ShA 30%, red, medium
Art. MOF
Ready in RED in d. 16 – 20 – 25 – 32 – 40 – 50 – 63;
Art. MOP
FULL
Ready in RED in d. 16 – 20 – 25 – 32 – 40 – 50;
TECHNICAL FEATURES
The locking device of the DAX nuts is an AISI 301 stainless steel insert. During tightening, the insert undergoes elastic deformation and adapts itself to the flank of the screw thread, exerting a force that is sufficient to ensure an adequate prevailing torque and a high resistance in applications with strong vibrations and dynamic stress.
The insert, after deformation by screwing, returns to its original shape, allowing repetitive reuses with a slight reduction of the prevailing torque
values. The tightening force needed is small and certainly much less than what required by other types of self-locking nut.
The Dax nuts can withstand temperatures of -50° to +300° C.
OPTIONS
The Dax nuts are available in different versions:
• standard
• flanged
• low
• capped
MATERIALS AND COATINGS
The Dax nuts are available in:
• Steel cl. 8 (cl. 04 for low nuts), Hardness HV30 188-302
• Steel cl. 10 (not hardened and tempered for technical reason),
Hardness HV30 240-353
• Stainless steel AISI 304
The locking insert is always in AISI 301 stainless steel.
The Dax nuts in steel cl.8 (04) and cl.10 are available with Cr3 white zinc
plating, 7 μ thick.
*Available in stock.
For inferior quantities rise to be agreed.
Even (FL) and serrated (FD) simple flanged nuts.
Flanged nuts are not exactly self-locking, but obtained with cold pressing, where the flange is part of the nut itself.
Protection:
ecological yellow galvanisation.
FD = with serrated underhead
FL = with even underhead
Material: steel class 8.*
Available in stock.
The locking effect is guaranteed by the spring action, which presses the nut collar on the screw; this device does not reduce the efficiency even after several assemblies, as the locking element has no direct contact with the friction surfaces.
VARGAL can be used without applied tightening torque, due to the locking action which maintains the locknuts in the desired position, avoiding the loss of the assembly parts.
An excellent resistance to vibrations is guaranteed, as the vibrations increase the contraction of the spring on the collar with the consequential rise in the
force applied by the same collar on the screw thread.
VARGAL 10 locknuts are supplied with stainless steel spring.
They can operate on temperature range between – 50 °C up to + 200 °C.
The maximum endurable temperatures depend on specific application and are conditioned by several factors such as ventilation, heat sources.
For applications different than the ones above mentioned, we suggest tests under real operating condition.
No special tools are required for the fitting of VARGAL 10 locknuts.
* Available in stock in R50, Standard UNI 9319.
Low UNI 10331 upon request.
For inferior quantities rise to be agreed.
Art. PRV
Hardening painted steel
Metrical system. Bars of m. 1.
Steel 10.9 42CrMoS4.
Upon request Ø 33, 36, 42, 48,
7 working days.
Art. PFF
42CrMoS4 Class 10.9 DIN 6379.
Rolled thread.
Upon request 7 working days.
Art. DAA
Automatic alloy steel DIN 6330B.
Art. DAP
Automatic alloy steel.
Art. DAR
Automatic alloy steel DIN 6331.
Art. TCN
Tempering steel DIN 508 UNI 5531.
