Product Review

✔ Meets/Exceeds: DIN 912, DIN934
✔ Stainless steel 304, high strength and anti-corrosion in various environments
✔ Screw Head : Socket Cap; Screw Drive: Hex Socket , Known as Internal Hex Drives
✔ Easy to store: these screws and nuts come in an easy-use storage case

Item---Thread Length----Total Length
M3 x 4--------4mm--------7mm
M3 x 5--------5mm--------8mm
M3 x 6--------6mm--------9mm
M3 x 8--------8mm-------11mm
M3 x 10------10mm-------13mm
M3 x 12------12mm-------15mm
M3 x 14------14mm-------17mm
M3 x 16------16mm-------19mm
M3 x 18------18mm-------21mm
M3 x 20------20mm-------23mm
M3 x 25------25mm-------28mm
M3 x 30------30mm-------33mm

Package Contains:
M3 x 4----------50 Pcs
M3 x 5----------50 Pcs
M3 x 6----------50 Pcs
M3 x 8----------50 Pcs
M3 x 10---------50 Pcs
M3 x 12---------50 Pcs

M3 x 14---------25 Pcs
M3 x 16---------25 Pcs
M3 x 18---------25 Pcs
M3 x 20---------25 Pcs
M3 x 25---------25 Pcs
M3 x 30---------25 Pcs
M3 Nuts--------150 Pcs
Total: 600 Pcs

About Hex Socket Drives:
 Hex Socket drives, 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 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