M4 x 4mm Grub Screw (Socket Set Screw, Hex Drive 2mm)
The M4 x 4mm Grub Screw (Socket Set Screw) is a precision fastener designed for reliable shaft locking and mechanical assembly. Made from durable hardened steel, this screw features a 2mm hex socket drive for secure tightening and easy installation in tight spaces.
Ideal for motor couplings, gears, pulleys, and mechanical linkages, it ensures a strong grip without protruding from the surface — making it a must-have in robotics and machinery projects.
M4 x 4mm Grub Screw Specifications
- Thread Size: M4
- Length: 4mm
- Hex Drive: 2.0mm Allen key
- Head Type: Socket (headless)
- Material: Hardened steel
- Finish: Black oxide
- Type: Grub screw (socket set screw)
Applications
- Shaft and coupling locking
- Robotics and automation projects
- RC and hobby builds
- Gear and pulley fastening
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