Kindroufly M3 Socket Head Screw Assortment, 562 Pieces

Pieces: The Kindroufly M3 Socket Head Screw Assortment combines seven screw lengths with matching nuts and washers in a 562-piece kit. Its labeled storage case may help keep sizes sorted, while the internal hex drive means you will need a separate hex wrench.

At a glance

Includes M3 socket-head cap screws in seven lengths, plus hex nuts, flat washers, and spring lock washers.
Listing describes a transparent case with 10 compartments and size labels.
Internal hex drive is intended for installation where side clearance is limited, according to the listing.

Price

$4.99Save 50%

Reference price: ~~$9.98~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Seven listed screw lengths and matching nuts and washer types cover a range of M3 fastening needs.
Separate labeled compartments can make it easier to identify and store the assortment.
The listing specifies 12.9-grade alloy steel and a 0.5 mm thread pitch.

Cons

A hex wrench is required and is explicitly not included.
The assortment is limited to M3 fasteners and the listed lengths.

Technical specifications

14 specifications

Identity
Brand	Kindroufly
Model	Kindroufly-Screw-Kit

Fastener details
Size	M3
Thread size	M3-0.5
Thread pitch	0.5 mm
Screw lengths	M3 x 4 /6 /8 /10 /12 /16 /20mm
Fastener type	Socket Head
Head style	Socket
Drive type	Internal Hex
Shape	Hexagonal
Pieces	562

Materials and finish
Material listed	Alloy Steel
Grade claim	12.9 Grade Alloy Steel
Color	Black

What to know before buying

Listing details to confirm

The listing calls the kit 562 pieces. Its stated component counts add to 563: 140 screws, 140 nuts, 141 flat washers, 141 spring lock washers, and one case. Confirm the delivered count and contents in the selected listing. The listing also refers once to high-quality black M2.5 screws in customer feedback, which conflicts with this product's M3 specifications and does not establish that M2.5 fasteners are included.

Who is it for?

A good fit for

M3 repair and assembly tasks needing socket-head screws in several lengths.
3D printer, computer, instrument, appliance, lamp, cabinet, or bicycle projects where M3 fasteners fit.

Less suited to

Projects requiring a different thread size, head type, or screw length.
Buyers who need an included hex wrench or a kit with multiple metric diameters.

Kindroufly M3 Socket Head Screw Assortment, 562 Pieces · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 108 ratings

5 stars82%82%
4 stars9%9%
3 stars2%2%
2 stars2%2%
1 star5%5%

Customer feedback describes the fasteners as reasonable quality and appreciates the set's versatility. The reported comments include praise for black M2.5 screws, which does not match this listing's M3 specification, so that detail may not apply to this kit. The overall ratings skew positive, but they do not establish how the contents or fit perform for a particular repair.

Positive themes

Customer feedback describes the fasteners as reasonable quality.
Customers appreciate the set's versatility.

Frequently asked questions

What sizes of screws are listed?

The kit lists M3 socket-head cap screws in lengths of 4, 6, 8, 10, 12, 16, and 20 mm.

Is a hex wrench included?

No. The listing explicitly says the internal hex drive requires a hex wrench and that the wrench is not included.

What else is included besides screws?

The listing's package breakdown names M3 hex nuts, flat washers, spring lock washers, and a transparent plastic case. It gives conflicting total piece counts, so check the selected listing's package details.