Comparison : Item # PHPSD-0006-20-0038-Z, #6-20 x 3/8" Pan Head Phillips Self Driving Screw #2 Point Zinc
Item # IHWSD-0006-20-0038-Z, #6-20 x 3/8" Indent Hex Washer Head Self Drilling Screw #2 Point Zinc
Item # PHPSD-0006-20-0044-Z, #6-20 x 7/16" Pan Head Phillips Self Driving Screw #2 Point Zinc
Item # PFPSD-0006-20-0044-Z, #6-20 x 7/16" Pan Framing Head Phillips Self Drilling Screw #2 Point Zinc
Item # PHPSD-0006-20-0050-Z, #6-20 x 1/2" Pan Head Phillips Self Driving Screw #2 Point Zinc