Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	Alloy Steel
Hardness Grade	12.9
Head Type	Headless (Grub Screw)
Drive Type	Hex Socket
Point Style	Flat Point
Available Sizes	M3, M4, M5, M6, M8
Surface Finish	Black Oxide
Thread Standard	Metric Coarse
Application	Securing collars, gears, and pulleys to shafts
Package Content	Assorted kit with storage case

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Perfect fit for M6 applications

Ordered specifically for M6 machinery adjustments. The threading is clean, and the black oxide finish provides decent corrosion resistance for indoor workshop environments.

Anonymous

Mar 25, 2026

Rating: 4/5

Good value assortment

Great variety of sizes in one pack. The flat point works well for my application where I didn't want to dig into the shaft too deeply. One size was slightly short on count, but overall satisfied.

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent hardness for industrial use

These grade 12.9 screws are incredibly strong. I used them to secure a gear on a high-torque motor shaft, and they haven't slipped once. The hex socket is precise and didn't strip during installation.

Anonymous

Mar 06, 2026

Rating: 3/5

Good screws, messy packaging

The screws themselves are top quality and very hard. However, the plastic case arrived cracked, and the sizes were mixed together. Had to sort them manually.

Anonymous

Mar 04, 2026

Rating: 5/5

Fast shipping and great product

Needed these urgently for a repair job. Arrived next day and the flat point design was exactly what I needed to avoid damaging the soft brass shaft.

Anonymous

Mar 02, 2026

Rating: 5/5

True Grade 12.9 quality

As a mechanical engineer, I verify my hardware. These tests out correctly for hardness and tensile strength. Reliable supplier for critical fastening needs.

5 FAQ

Q: Can I get a VAT invoice for this purchase?

A: Yes, as mentioned in the product description, a free VAT invoice is available. You can download it directly from your order history page or request it via our customer support portal.

Q: Are these screws suitable for outdoor applications?

A: While the black oxide finish offers some protection, these are best suited for indoor or controlled environments. For prolonged outdoor exposure, we recommend applying a thread-locking compound with corrosion inhibitors or using stainless steel alternatives.

Q: What hex key size is required for the M5 screw?

A: For the M5 Grade 12.9 flat point set screw, you will typically need a 2.5mm hex key (Allen wrench). Please refer to the specific size chart included in the package for all dimensions.

Q: Is the head completely flush when installed?

A: Yes, since these are headless grub screws with a flat point, they sit entirely within the threaded hole, leaving no protrusion beyond the surface of the component.

Q: Do these come with thread locker pre-applied?

A: No, these screws do not come with pre-applied thread locker. This allows you to choose the specific retention strength (low, medium, or high) based on your project requirements.

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