Product Review

✔  Meets/exceeds: DIN 7991
✔  Stainless steel 304, high strength and anti-corrosion in various environments
✔  Screw Head: flat head, known as countersunk head ; screw drive: hex socket , known as internal hex drives
✔  Countersunk angle: 90 degree
✔  Easy to store: These screws come in an easy-use separated girds storage case

Item-------------Thread Length-------Total Length
M3 x 6mm ----------3.8mm-------------6mm
M3 x 8mm ----------5.8mm-------------8mm
M3 x 10mm ---------7.8mm------------10mm
M3 x 12mm ---------9.8mm------------12mm
M3 x 16mm---------13.8mm------------16mm

Package Contains:
M3 x 6mm-------------------50 Pcs
M3 x 8mm-------------------50 Pcs
M3 x 10mm------------------50 Pcs
M3 x 12mm------------------50 Pcs
M3 x 16mm------------------50 Pcs
Total------------------------250 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 Flat Head
 Flat head screws are designed to fit flush to the surface when used with countersunk holes.