80° Square Recessed Countersunk Head Screws
Square Recessed Countersunk Head Screws (ASTM F837, F468)
Square Recessed Countersunk Head Screws [Table 2] (ASTM F837, F468)
Undercut 82-deg Square Recessed Countersunk Head Screws, Type III
Undercut 82-deg Square Recessed Countersunk Head Screws, Type III