[M4 x 30  & 35  & 40  & 45  & 50]

[M6 x 40  & 45  & 50  & 55  & 60]

[M5 x 40  & 45  & 50  & 55  & 60]

[M6 x 8  & 10  & 12  & 16  & 20]

[M5 x 10  & 12  & 14  & 16  & 20]

[M5 x 20  & 25  & 30  & 35  & 40]

[M4 x 40  & 45  & 50  & 55  & 60]

[M5 x 6  & 8  & 10  & 12  & 16]

[M3 x 6  & 8  & 10  & 12  & 16]

[M6 x 10  & 12  & 14  & 16  & 20]

[M4 x 20  & 25  & 30  & 35  & 40]

[M4 x 8  & 10  & 12  & 14  & 16]

[M3 x 8  & 10  & 12  & 16  & 20]

[M3 x 30  & 35  & 40  & 45  & 50]

[M3 x 4  & 6  & 8  & 10  & 12]

[M4 x 16  & 18  & 20  & 25  & 30]

[M4 x 60  & 65  & 70  & 75  & 80]

【 5 Sizes M4 Hex Socket Button Head Cap Screws Assortment and 1 Pcs Hex Key 】

✔ Meets/Exceeds: ISO7380
✔ Screw head style: button head, head diameter: 7.4 mm, head height: 2.0 mm
✔ Screw drive system: internal hex drives, also known as hex socket drives, hex size: 2.5 mm
✔ Thread Size ( Diameter ): 4 mm, Thread pitch: 0.7 mm, Thread Length from 8 mm to 16 mm
✔ Material of screws: stainless steel 304, high strength and anti-corrosion in various conditions
✔ Includes 1 Pcs hex key, hex size: 2.5 mm, to drive these screws conveniently and easily
✔ Material of hex key: chrome-vanadium steel, nickel plated, higher strength and anti-rust
✔ Easy to store: all these screws and 1 pcs hex Key packed in a sturdy easy-use plastic storage case, organized conveniently and easily

[ M4 x 8 means : metric screws, thread size ( Diameter ): 4.0 mm, thread length 8 mm ]
[ Sizes ]-----[ Thread Length ]-----[ Total Length ]
M4 x 8 ------ 8 mm/0.31"------- 10 mm/0.39"
M4 x 10 ------ 10 mm/0.39"------- 12 mm/0.47"
M4 x 12 ------ 12 mm/0.47"------- 14 mm/0.55"
M4 x 14 ------ 14 mm/0.55"------- 16 mm/0.63"
M4 x 16 ------ 16 mm/0.63"------- 18 mm/0.71"

[ Package Contains ]
M4 x 8------20 Pcs
M4 x 10------20 Pcs
M4 x 12------20 Pcs
M4 x 14------20 Pcs
M4 x 16------20 Pcs
Hex Key ---1Pcs

[ About Internal Hex drives ]
Internal Hex drives, also known as Hex Socket 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 Head , 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