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Screw Types


Measurement Of The Length Of Screws 


Types of heads



Illustration For The Type And Sorts Of General Screw Threads

Finish Treatment Codes


Dimensions Size And Tolerance Tables Of Screw Head

    1. Screw with asterisks are not of ISO specifications.
    2. Parenthetic screw are scarcely used.         
    3. The errors of Slotted Head Cross-Recessed Head Screw are equal.