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ASME B18.6.3 Combination Slotted Type 1A Cross Recessed Round

Dimensions of ASME B18.6.3 Combination Slotted Type 1A Cross Recessed Round Head Machine Screws

Dimensions of ASME B18.6.3 Combination Slotted Type 1A Cross Recessed Round Head Machine Screws

Nominal Size or Basic Screw DiameterHead Diameter, AHead Height, HSlot Width, WSlot Depth, DRecess Diameter, MRecess Depth, TRecess Width, NDriver SizeRecess Penetration Gaging Depth, P
MaxMinMaxMinMaxMinMaxMinMaxMin
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Notes :

  • Where specifying nominal size in decimals, zeros preceding the decimals and in the fourth decimal place shall be omitted.
  • Due to the underfill of material caused by the combination recess, the minimum slot depths are approximately 10% lower than slotted round heads.