Indented Hex Head

B1/2-13 x 1-1/4" Machine Screw - Flat Head - Slotted - Steel - Zinc CR+3 - FT - 25 Pk - BBI 580937 Machine Screws are designed to go through a hole or nut that is pre-tapped to form a mating thread for that screw. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable.

10X1 1/2 Slotted Indented Hex Washer With Bonded Neo Epdm Washer F/T Self Piercing Zinc. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry. Indented hex washer head offers advantages of hex head, plus greater protection to mating surface.

B12-24 x 1-1/2" Machine Screw - Flat Head - Phillips - Steel - Zinc CR+3 - FT - 100 Pk - BBI 586527 Machine Screws are designed to go through a hole or nut that is pre-tapped to form a mating thread for that screw. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable.

Machine Screws feature straight shank fasteners with external threads designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Fasteners are durably constructed of steel for long lasting reliability and strength.

B3/8-16 x 4-1/2" Machine Screw - Flat Head - Phillips - Steel - Zinc CR+3 - FT - 100 Pk - BBI 586795 Machine Screws are designed to go through a hole or nut that is pre-tapped to form a mating thread for that screw. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable.