M4*18 12.9 grade semi-round head internal hexagonal screw

Socket Button Head Screw M4×18, Grade 12.9 – Pack of 50

Reliable and durable M4×18 socket button head screws made from high-strength grade 12.9 steel. A great choice for hobby projects, DIY builds, RC models, 3D printer assemblies, electronics, and all kinds of workshop jobs where you need a compact fastener with solid strength and a clean finish.

The rounded button head gives the screw a neat, low-profile look, while the internal hex socket makes installation quick and convenient with the right Allen key. Thanks to the 4 mm thread diameter and 18 mm length, these screws are a practical addition to any maker’s parts box.

• Thread size: M4
• Length: 18 mm
• Head type: Button head
• Drive type: Internal hex socket
• Material grade: 12.9 steel
• Thread diameter: 4 mm
• Perfect for: hobby use, DIY repairs, model building, mechanical assemblies, and electronics projects

Package includes:

• 50 x M4×18 socket button head screws