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Cross recessed large flat head machine screws ANSI/ASME B 18.6.3 - 2003
Standard Designation: ANSI/ASME B 18.6.3 - 2003
Head Style: Big flat head
ANSI/ASME B 18.6.3 - 2003
The cross recessed large flat head screw can be either a machine thread or a self-tapping thread. This standard number is the machine thread. Its head is thinner than the pan head and round head. The head is larger than the pan head and the thickness is smaller. So from the appearance of the shape, it is flat, so it is called a large flat head screw. There is a cross recess on the head.




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