DIN9250 VS

 

 

This range of Safety Washers is based on the Disc Spring concept. The washer has the unique feature of radial serrations on both the concave and convex surfaces. When tightened to near capacity these serrations bite into the mating surfaces, thus preventing the loosening of the screw due to vibration and other similar circumstances. The Safety Washer offers a reduced outside diameter compared with a conventional Disc Spring Washer. This corresponds to most screw head sizes and is very compatible with the hexagonal socket type screw.

For screws of property classes 8.8 and 10.9, higher pretension forces might be necessary. These are covered by our reinforced washers type “VS”.  


Materials

65MN
S60C
SK5
60Si2Mn
51CrV4

Finish

Zinc Plated
Black
Dacromet
Geomet

Appliction

Used in many industries: energy, transportation, marine, mining ,construction and bridge construction, manufacturing, processing, shipbuilding, forestry and agriculture, heavy vehicles and military.

Advantages

The trapezoidal cross section makes the locking force act on the outer diameter to ensure the maximum resistance to loosening.
Tooth shape design effectively prevents vibration loosening.
Closed circular design produces high pre-tightening force and excellent friction connection.
High load concentricity can avoid bolt bending when tightening.
Smooth tooth edge, avoid scratching bolt surface when locking.