Feature

●? Includes 500 Pcs, 13 Sizes, M3 Hex Socket Head Cap Screws, Thread Pitch 0.5 mm, Thread Size ( Diameter) 3 mm, Head Diameter 5.5 mm, Head Height 3.0 mm, Thread Length From 4 mm to 50 mm; Material of Screws: Alloy Steel 40Cr, Black Oxide Finish; Strength Grade of Screws : 12.9 Grade, Hardness: HRC 39-44, Tensile Strength: 1220N/mm²
●? Includes 500 Pcs M3 Nuts to Meet Different Applications, Material of Nuts: Alloy Steel 10B21, Black Oxide Finish
●? 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, Anti-rust
●? Includes 500 Pcs Φ3 Washers: Add More Touch Area to Meet Special Condition In Some Cases and Protect Parts from Being Damaged, Material of Washers: Alloy Steel 10B21, Black Oxide Finish
●? Package: All These Screws, Nuts, Washer and Hex Key Packed In a Sturdy Easy-use Plastic Storage Box, Organized Conveniently and Easily


Description

? Meets/Exceeds: DIN912, DIN934, DIN125
? Screw head: socket cap; screw drive: 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
? Rust proof of screws, nuts, washers: black oxide finish with anti-rust oil

[Sizes]---[Thread Length]---[Total Length]
M3 x 4---------4mm-------7mm
M3 x 6---------6mm-------9mm
M3 x 8---------8mm------11mm
M3 x 10-------10mm------13mm
M3 x 12-------12mm------15mm
M3 x 16-------16mm------19mm
M3 x 20-------20mm------23mm
M3 x 25-------25mm------28mm
M3 x 30-------30mm------33mm
M3 x 35-------35mm-------38mm
M3 x 40-------40mm------43mm
M3 x 45-------45mm------48mm
M3 x 50-------50mm------53mm

[ Package Contains ]
M3 x 4-----50 Pcs
M3 x 6-----50 Pcs
M3 x 8-----50 Pcs
M3 x 10-----50 Pcs
M3 x 12-----50 Pcs
M3 x 16-----50 Pcs
M3 x 20-----50 Pcs

M3 x 25-----25 Pcs
M3 x 30-----25 Pcs
M3 x 35-----25 Pcs
M3 x 40-----25 Pcs
M3 x 45-----25 Pcs
M3 x 50-----25 Pcs
M3 Nuts-----500 Pcs
Φ3 Washers-----500 Pcs
Hex Key------1 Pcs
Total: 1501 Pcs

[ 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