Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	304 Stainless Steel
Head Style	Hex Socket (Allen)
Drive Type	Internal Hex
Thread Type	Self-Tapping
Strength Grade	8.8
Finish	Black Oxide Coated
Available Sizes	M2, M2.5, M3, M4, M5, M6
Application	Metal, Plastic, Wood
Corrosion Resistance	High (Suitable for Outdoor Use)
Package Content	Assorted Kit with Storage Box

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Excellent quality for the price

These screws are incredibly sturdy. The black finish looks professional and the hex socket fits my tools perfectly without stripping. Great for my DIY metal projects.

Anonymous

Mar 27, 2026

Rating: 3/5

Decent but mixed lengths

The quality of the steel is good, but the kit had fewer M2 screws than I expected based on the description. Still usable for most general tasks.

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for outdoor furniture repair

I needed rust-resistant screws for my garden bench. The 304 stainless steel holds up well against the elements, and the black color matches the frame nicely.

Anonymous

Mar 13, 2026

Rating: 4/5

Good variety pack

The assortment of sizes is very convenient. I used the M4 and M5 sizes for assembling a computer stand. Only giving 4 stars because the box latch feels a bit flimsy.

Anonymous

Mar 10, 2026

Rating: 5/5

Sharp and effective

The self-tapping feature works like a charm on aluminum sheets. No need to pre-drill pilot holes for thinner materials. Highly recommended for workshop use.

Anonymous

Mar 10, 2026

Rating: 5/5

Best seller for a reason

Fast shipping and great product. The Grade 8.8 strength is noticeable; these don't bend easily under torque. Will definitely buy again.

5 FAQ

Q: What size Allen key do I need for the M5 screws?

A: For the M5 Hex Socket screws in this set, you will typically need a 4mm Allen key. A standard metric hex key set will work perfectly.

Q: Does this kit come with a storage case?

A: Yes, the Guwanji Fasteners kit includes a compartmentalized plastic storage box to keep the different sizes organized and easy to find.

Q: Are these screws suitable for use on marine boats?

A: While 304 Stainless Steel offers good corrosion resistance, for constant exposure to saltwater, we recommend 316 Stainless Steel. These are great for general outdoor use but may not be ideal for direct, continuous saltwater immersion.

Q: Is the black coating durable or will it chip off?

A: The black oxide finish provides a sleek look and moderate corrosion protection. It is durable for normal installation and use, but excessive abrasion or scratching during installation could wear the coating.

Q: Can these tap into hard plastic?

A: Yes, the sharp self-tapping threads are designed to cut into plastics, wood, and soft metals. For very hard or brittle plastics, we suggest drilling a small pilot hole to prevent cracking.

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