iExcell 100 Pcs M3 x 20/25/30/35/40 mm Stainless Steel 304 Hex Socket Head Cap Screws Bolts Assortment Kit

✔Meets/Exceeds: DIN 912, DIN934
✔Screw head style: socket cap; screw drive system: hex socket, also known as internal hex drives, hex size: 2.5 mm
✔Head diameter: 5.5 mm; head height: 3 mm; thread pitch: 0.5 mm; thread diameter: 3 mm

✔ M3 x 20mm means : Metric screws, Thread diameter size 3 mm, Thread length 20 mm

[ Sizes ]—–[ Thread Length ]——[ Total Length ]
M3 x 20mm—–20mm/0.79″———-23mm/0.91″
M3 x 25mm—–25mm/0.98″———-28mm/1.10″
M3 x 30mm—–30mm/1.18″———-33mm/1.30″
M3 x 35mm—–35mm/1.38″———-38mm/1.50″
M3 x 40mm—–40mm/1.57″———-43mm/1.69″

Package Contains:
M3 x 20mm——-20 Pcs
M3 x 25mm——-20 Pcs
M3 x 30mm——-20 Pcs
M3 x 35mm——-20 Pcs
M3 x 40mm——-20 Pcs
Hex Key Wrench—1 Pcs

Total: 101 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