iExcell 600 Pcs M3 Stainless Steel 304 Hex Socket Head Cap Screws Bolts Nuts 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 [ Sizes ]--------[ Thread Length ]----[ Total Length ] M3 x 4mm ------4mm/0.16" -------7mm/0.28" M3 x 5mm ------5mm/0.20" -------8mm/0.31" M3 x 6mm ------6mm/0.24" -------9mm/0.35" M3 x 8mm ------8mm/0.31"--------11mm/0.43" M3 x 10mm-----10mm/0.39"-------13mm/0.51" M3 x 12mm-----12mm/0.47"-------15mm/0.59" M3 x 14mm-----14mm/0.55"-------17mm/0.67" M3 x 16mm-----16mm/0.63"-------19mm/0.75" M3 x 18mm-----18mm/0.71"-------21mm/0.83" 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" Package Contains: M3 x 4mm------25 Pcs M3 x 5mm------25 Pcs M3 x 6mm------25 Pcs M3 x 8mm------25 Pcs M3 x 10mm-----25 Pcs M3 x 12mm-----25 Pcs M3 x 14mm-----25 Pcs M3 x 16mm-----25 Pcs M3 x 18mm-----25 Pcs M3 x 20mm-----25 Pcs M3 x 25mm-----25 Pcs M3 x 30mm-----25 Pcs M3 Nuts---------300 Pcs Hex Key ------1 Pcs Total: 601 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