M88 High Tensile Stainless Steel 304 316 Machine Hex Head sems screw

M88 High Tensile Stainless Steel 304 316 Machine Hex Head sems screw

Description:

A screw with only a spring pad or with only a flat pad, or also can only be equipped with a tooth two components.GB9074 is used to represent the country label of composite screw.The standard of cross groove small disc head three combination screw is GB9074.8.This.8 is for the small disc head.That is to say, the head size of the pan - head screw.PM is the letter.Professional combination screw manufacturers, the customary expression method is the triad PM.The standard of cross groove large disc head combination screw is GB9074.4.The specialty is called large pan head combination screw.Or R head, or B head.In other words, the head of this combined screw is larger and thicker than that of the small disc head combined screw.Still have a kind of commonly used is outer hexangular combination screw, this kind is cross outer hexangular combination screw.Often called socket hexagon combination screw.Country number GB9074.13.

Specification:

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