About

Diameter: 3mm
Bolt Length: 4mm
Material: Mild Steel (Black oxide)

The M3 x 4mm Grub screw is 3mm in diameter and 4mm long. Made from Mild Steel material the grub screw has a black oxide finish that will protect it from any sort of corrosion.

A grub screw is generally used to secure an item against another item. It is commonly used as a locking device, particularly on custom modified Gears, pillow ball bearings, taper locking bushes, pulleys or adjusting rings.

Grub Screws are designed with a hexagonal internal drive in the head, allowing them to be tightened and loosened with an Allen key.

Precision Engineering for Reliable Fastening

Our M3 x 4mm Grub Screws are engineered for applications where secure, flush mounting is crucial. These headless screws are widely used to affix components like pulleys, gears, and collars to shafts, providing stability and holding power. The hex drive ensures easy installation and removal, enabling maintenance and adjustments when needed without head protrusion.


Durability with Black Oxide Protection

The mild steel base ensures strength while the black oxide finish adds mild corrosion resistance. This protective coating not only enhances durability in standard environments but also gives the fasteners a sleek black appearance. Count on our grub screws for long-lasting performance in mechanical assemblies.


Meets International Quality Standards

Compliant with DIN 916 / ISO 4029, these grub screws are manufactured to precise quality benchmarks. The metric coarse threading ensures compatibility with a wide range of components, supporting dependable performance across various industrial and mechanical settings.