SAFETY WHEEL NUT

Safety Wheel Nut is a free-spinning, vibration proof wheel nut, specifically designed to prevent wheel loss from commercial vehicles such as trucks, trailers and buses with spigot mounted wheel fixings. Safety Wheel Nuts are considered to be far superior in terms of safety than standard two-piece wheel nuts. The combination of lateral bending forces on the road-wheels due to cornering and torsional forces due to braking and acceleration, which result in settling and looseness of normal bolted assemblies, cause Disc-Lock Safety Wheel Nuts to maintain the clamping force and to lock, thus keeping the wheels secure on the axle.

HOW DOES THE SAFETY WHEEL NUT WORK

Unlike a standart two-piece Wheel nut the  Safety Wheel Nut is split into three section comprising a nut(1),a hexagon-flanged washer(2)and a  flat faced cup washer(3).These section are joined together to from a one-piece assembly with an o-ring.

The top two sections(1&2)have interlocking cams.When sebjected to road shock or vibration,the most common casues of Wheel nut loosening.The interlocking cams of the Safety Wheel Nut attempt tor rise against each other.

As the angle of the cam is greater than the pitch angle of the therad on the stud a wedding action takes place and the Safety Wheel Nut Locks and will not come loose .Thus maintaining the clamp load and keeping the Wheel on the axle.

THE SAFETY WHEEL NUT

*Maintains wheels on axles

*Is approved by vehicle and axle manufacturers

*Is as simple to install as a standard two-piece wheel nut

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HOW GOOD IS THE SAFETY WHEEL NUT

When tested against a standard two-piece wheel nut on a Junker Test machine the Disc-Lock Safety Wheel Nut remains secure under the most severe vibration conditions while the standard two-piece wheel nut comes completely loose.

DIMENSION

Size and Theraed        Width Across Flats         Heigt         Flange Diameter

  A                                  B                                      C               D

————————         —————————-       ———-      ————————-

M18x1.5                        34 mm                            29 mm        47.5 mm

M20x1.5                        34 mm                            29 mm        47.5 mm

M20x2.5                        34 mm                            29 mm        47.5 mm

M22x1.5                        38 mm                            34 mm        52.0 mm

The Safety Wheel Nut is manufactured from 1040/1045 steel headtreated to ROCWELL C 32-36,and coated in GEOMET an environmentally friendly anti-corrosion protection which is chrome free(compliant with European Union Directive)