HELIFOUNER M3 304 Stainless Steel Button Head Screw Kit, 540 Pieces

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Product guide

HELIFOUNER M3 304 Stainless Steel Button Head Screw Kit, 540 Pieces

Pieces: HELIFOUNER M3 Screws Kit is a 540-piece assortment of button-head socket cap screws, nuts, and washers in seven screw lengths. It is aimed at small hardware jobs where an M3 metric selection and several matching lengths are useful. The listing describes 304 stainless steel, while the technical details give the broader material description of stainless steel.

At a glance

Seven screw lengths from 6 mm to 30 mm, with matching M3 nuts, flat washers and lock washers listed.
A 540-piece assortment is stated, with individual quantities specified for each type in the package inventory.
Customer feedback mentions use with 3D prints, though durability and threading experiences are mixed.

Price

$4.99Save 50%

Reference price: ~~$9.99~~

Price checked: Nov 12, 2026

View offer Ahead of Black FridayExplore the selection

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Pros and cons

Pros

Seven M3 length options provide a useful range for small assembly and repair tasks.
The stated assortment includes nuts plus flat and lock washers, rather than screws alone.
The claimed clear, labeled storage box may help separate the small hardware by size.

Technical specifications

15 specifications

Identity
Brand	HELIFOUNER
Model	HELIFOUNER Screws Kit
Set name	HELIFOUNER Stainless Steel Fastener Kit (540 Piece)

Fasteners
Fastener type	Socket Head Cap Screw
Size	M3
Thread size	M3-0.5
Item diameter	3 millimeters
Screw head style	Button
Item shape	Round
Lengths listed	M3 x 6mm /8mm /12mm /16mm /20mm /25mm /30mm

Materials and finish
Material listed	Stainless Steel
Grade rating	304 Stainless Steel
Finish	Plain
Color	Silver

Quantity
Number of pieces	540

What to know before buying

Listing details to confirm

The listing's title and feature text call the steel 304 stainless, while the technical material field only says stainless steel. The title and feature text describe matching washers and nuts, but the package inventory gives 140 flat washers and 140 lock washers without dimensions or a material grade. Confirm the exact contents and material detail if those distinctions matter. Keep small parts away from children because of the stated choking hazard.

Who is it for?

A good fit for

DIY and repair work requiring M3 button-head socket screws in several lengths.
Small mechanical or electronics projects that can use M3-0.5 fasteners with separate nuts and washers.
Buyers who want an assortment for projects such as 3D prints, as mentioned in customer feedback.

Less suited to

Projects requiring screw sizes other than M3 or lengths outside the seven listed options.
Applications where a specified load rating or verified durability is essential, since none is provided.

HELIFOUNER M3 304 Stainless Steel Button Head Screw Kit, 540 Pieces · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 344 ratings

5 stars83%83%
4 stars13%13%
3 stars2%2%
2 stars1%1%
1 star1%1%

Customer feedback highlights the assortment, small-size selection, and positive functionality reports, including mentions of use with 3D prints and nuts staying in place in vibration-prone settings. That makes the range potentially useful for small assembly work, but buyers should weigh the reported mixed experiences with durability and threading. Aggregate ratings are broadly favorable, but they do not establish performance for a specific application.

Positive themes

Customers describe the set as a useful assortment of metric hardware with a good selection of small sizes.
Feedback includes positive functionality reports and mentions use with 3D prints.

Mixed feedback

Durability and threading receive mixed feedback.
One customer report says the nuts helped stay in place in vibration-prone environments, but this is not a specified performance rating.

Frequently asked questions

What sizes are included?

The listing gives seven M3 screw lengths: 6, 8, 12, 16, 20, 25, and 30 mm.

What does the 540-piece count include?

The package inventory lists screws, M3 nuts, flat washers, and lock washers. It specifies quantities for each item, adding up to the stated 540 pieces.

Is the material confirmed as 304 stainless steel?

The title and feature text state 304 stainless steel, while the technical material field says only stainless steel. The listing does not resolve that difference.

Are these suitable for 3D-printing projects?

Customer feedback mentions successful use with 3D prints. Confirm that the M3 thread, length, and hardware arrangement suit your particular part.