Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	Alloy Steel
Grade	12.9
Head Style	Hex Socket Headless (Grub)
Point Type	Cup Point
Drive Type	Internal Hex
Available Sizes	M3, M4, M5, M6
Surface Finish	Black Oxide
Thread Pitch	Coarse (Standard)
Hardness	HRC 39-44
Package Contents	Assorted Kit with Storage Case

6 reviews

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for automotive applications

Bought these to secure shift knobs and pedal assemblies. The hex socket is precise, allowing for good leverage. No rounding off occurred during installation.

Anonymous

Mar 25, 2026

Rating: 4/5

Solid hardware

Great screws overall. The M5 and M6 sizes are particularly robust. I deducted one star only because the case latch feels a bit flimsy, but the contents are top-notch.

Anonymous

Mar 15, 2026

Rating: 5/5

Professional grade

As a mechanic, I go through a lot of grub screws. These are among the best I've purchased online. Consistent threading and high tensile strength make them a staple in my toolbox.

Anonymous

Mar 12, 2026

Rating: 5/5

Strong and reliable

Used these for a custom 3D printer build. They hold the gears securely without slipping. The black oxide finish also helps with corrosion resistance in my workshop environment.

Anonymous

Mar 08, 2026

Rating: 5/5

Excellent quality for machinery repair

These set screws are exactly what I needed for securing pulleys on my lathe. The 12.9 grade is genuine, and they haven't stripped even under high torque. Highly recommended for industrial use.

Anonymous

Mar 05, 2026

Rating: 4/5

Good value, fast shipping

The assortment kit is very convenient. The cup points bite well into the shafts. One size was slightly tight in the case, but the screws themselves are perfect.

5 FAQ

Q: What hex key size is required for the M4 screws?

A: For the M4 cup point set screws in this kit, you will typically need a 2mm hex key (Allen wrench).

Q: Are these screws suitable for outdoor use?

A: While they have a black oxide finish which offers some corrosion resistance, we recommend applying additional lubricant or using stainless steel variants for prolonged exposure to harsh outdoor elements.

Q: Is a VAT invoice provided automatically?

A: Yes, as mentioned in the description, a valid VAT invoice is generated automatically and sent to your email upon purchase completion.

Q: Does this kit include a storage box?

A: Yes, the product comes with a durable plastic compartmentalized case to keep the different sizes organized and easily accessible.

Q: Can these be used on hardened steel shafts?

A: Yes, the Grade 12.9 hardness makes them suitable for use on hardened steel shafts, ensuring a secure grip without deforming the screw tip easily.

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