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Screw Heads

 

Head Styles 
 


Screw Heads

FLAT HEAD SCREW SPECIFICATIONS

 Head DiameterDriver Size
SizeMaxMinPHCO/SQ
#4 .225 .195 1 -
#5 .252 .220 2R -
#6 .255 .240 2R SQ2
#6 LG .279 .260 2R SQ2
#7 .295 .267 2R SQ2
#8 .332 .292 2R SQ2
#9 .335 .295 2 SQ2
#10 .385 .340 2 SQ2

MODIFIED PAN HEAD SPECIFICATIONS

 Head DiameterDriver Size
SizeMaxMinPHCO/SQ
#6 Modified Modified - SQ2
#7 Modified Modified - SQ2

PAN HEAD SPECIFICATIONS

 Head DiameterDriver Size
SizeMaxMinPHCO/SQ
#6 .270 .256 2R -
#7 .296 .281 2R -
#8 .322 .306 2R SQ2
#10 .373 .357 2 -
#12 .425 .407 3 -

ROUND WASHER HEAD SPECIFICATIONS

 Head DiameterDriver Size
SizeMaxMinPHCO/SQ
#8 .375 .345 - SQ2
#9 .471 .376 - SQ2
#10 .500 .472 - SQ2
#12 .433 .413 - SQ2
#14 .524 .505 3 -

LARGE ROUND WASHER HEAD SPECIFICATIONS

 Head DiameterDriver Size
SizeMaxMinPHCO/SQ
#8 .500 .472 2R -