HOW TO INSTALL

*The strong self-loking performance of the Lock Nut is easily achieved through the use of an ordinary commercially available spanner or wrench.

*Use a wrench, etc. to tighten the lower nut against the material. Even an ordinary wrench can provide sufficient tightening force.

*Nex screw the upper(concave)nut onto the bolt by hand.

*After tightening the upper nut by hand, use a wrench, etc. to tighten it about 1 turn.This will completely lock the nuts.

QUALITY  CLASS

* Class Steel  :8,10,12

*Stainless steel A2,A4

PRODUCTION NORM

*Standard DIN 934 production to the extent

*Other requested standards nut( DIN439 Contra Nut,DIN6915,DIN6923 Flange Nut)

DIMENSION

*M8-M250 mm

*3/8”-2”

*Metric thereading:Standart ISO 965-2

*Thereading UNC-UNF AISI B1.1 and BS 1580

COATING

*Galvanizing,Geomet500A