【20 Pcs 5/16-18 x 2-1/4" Hex Socket Button Head Cap Screws + 1 Pcs Hex Key Come In a Plastic Storage Box】

✔ Contains 20 Pcs 5/16-18 x 2-1/4" hex socket button head cap screws
--Meets/exceeds: ANSI/ASME B18.3BT
--Thread size ( diameter ): 0.312"/7.93mm
--TPI: 18 teeth per inch
--Thread length: 2-1/4" ( 2.250"/57.15mm ), total length ( includes head ) 2.409"/61.19mm
--Screw head style: button head, head diameter: 0.537"/13.64mm, head height 0.159"/4.04mm
--Screw drive style: hex socket drive, also known as internal hex drive, hex size: 3/16"
--Made of Stainless steel 304, high strength and anti-corrosion in various conditions
✔ Contains 1 Pcs hex key to drive these screws conveniently and easily
--Hex size: 3/16"
--Made of chrome-vanadium steel, nickel plated, higher strength, anti-rust
✔ Easy to store: 20 Pcs 5/16-18 x 2-1/4" hex socket button head cap screws and 1 Pcs hex key come in a plastic storage box, organized conveniently and easily

[ Package Contains ]
5/16-18 x 2-1/4"-----20 Pcs
Hex Key------1 Pcs

[ Hex Socket Drive ]
Hex Socket Drive, also known as Internal hex drive, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench
[ About Button Head ]
Button head is similar to standard pan head screws but have a curved top