Painted Safety Red Self Tapping Screw, with 7/16" Head, Serrated, Zinc Plated
                       
 
                       
Measure Tapping Screw length from the underhead bearing surface to the extreme end of the screw.
  A W B H D  
Size Max Min Min Max Min Max Min Max Min  
1/4-14 Type AB

.437

.429

.481

.590

.551

.190

.172

 .246 .240