M4*45 12.9 grade semi-round head internal hexagonal screw

Button Head Hex Socket Screw M4×45, Grade 12.9

Looking for a strong and reliable fastener for hobby builds, DIY projects, RC models, 3D printer assemblies, or workshop use? This M4×45 button head hex socket screw made from grade 12.9 steel is a great choice wherever durability, a neat finish, and secure tightening matter.

The button head design gives the screw a clean, low-profile look, while the internal hex socket makes installation quick and convenient with the right Allen key. Thanks to its high-strength 12.9 steel construction, this screw is well suited for more demanding applications where standard fasteners may not be enough.

Key features

• Thread size: M4
• Length: 45 mm
• Head type: Button head
• Drive type: Internal hex socket
• Material grade: Steel, grade 12.9
• Thread diameter: 4 mm
• Use case: Ideal for hobby, DIY, mechanical, and technical projects

Package includes

• 50 x M4×45 button head hex socket screws