iExcell 50 Pcs 12.9 Grade 1/4-20UNC x 3/8" 1/2" 5/8" 3/4" 1" Alloy Steel Hex Socket Head Cap Screws Bolts Assortment, Black Oxide Finish

• Screw Head: Socket Cap, Screw Drive:Hex Socket, Hex Size 3/16"
• Head Dia.: 3/8";Head Height: 1/4";Thread Dia. 1/4";Pitch: 20 Threads Per Inch
• 5 Sizes: 1/4-20 x 3/8",1/4-20 x 1/2",1/4-20 x 5/8",1/4-20 x 3/4",,1/4-20 x 1"
• Thread Length: 3/8", 1/2", 5/8", 3/4",1"; Total Length: 5/8", 3/4", 7/8", 1",1-1/2"
• Package: 50 Pcs 1/4-20UNC Hex Socket Head Cap Screws, Come in a Plastic Storage Case

✔  Meets/exceeds: ANSI/ASME B18.3SH ✔  Material: 12.9 alloy steel, hardness: HRC 39-44, tensile strength 1220 N/mm² ✔  Rust proof : black oxide finish, covered with anti-rust oil ✔  Easy to store: these screws come in an easy-use separated girds storage case [ Sizes ]------[Head Dia. ]---[ Head Height ]---[ Thread Length ] ------[ Total Length ] 1/4 x 3/8"--------3/8"----------1/4"-------------3/8"--------------------5/8" 1/4 x 1/2"--------3/8"----------1/4"-------------1/2"--------------------3/4" 1/4 x 5/8"--------3/8"----------1/4"-------------5/8"--------------------7/8" 1/4 x 3/4"--------3/8"----------1/4"-------------3/4"---------------------1" 1/4 x 1"----------3/8"----------1/4"-------------1"----------------------1-1/4" [ Package Contains: ] 1/4 x 3/8"--------10 Pcs 1/4 x 1/2"--------10 Pcs 1/4 x 5/8"--------10 Pcs 1/4 x 3/4"--------10 Pcs 1/4 x 1"----------10 Pcs Total-------------50 Pcs About Hex Socket Drive Hex Socket Drive, also known as Internal hex drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench About Socket Cap Head Socket cap, also known as Allen head, have a recessed drive, and are commonly used when there is not enough clearance for a conventional wrench or socket. They are fastened with an Allen wrench, which is also called a hex wrench or hex key.