HELIFOUNER 900-Piece 304 Stainless Steel Spring Lock Washer Kit

HELIFOUNER spring lock washers are offered as a 900-piece metric assortment in nine sizes, from M2 through M12. The listing describes 304 stainless steel and says the washers are intended for matching screws, nuts, and bolts. The size mix is uneven, with 200 each of M2, M2.5, and M3 but only eight M12 washers.

At a glance

Nine metric sizes from M2 to M12 in one assortment.
Listing specifies 304 stainless steel and describes the washers as weakly magnetic.
Package description specifies a plastic case and quantities by size.
Described for threaded connections using same-size screws, nuts, or bolts.

Price

$5.99Save 50%

Reference price: ~~$11.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Nine sizes cover a broad range of metric fasteners in a single assortment.
The stated size-by-size quantities help buyers judge whether the mix suits their expected work.
The claimed stainless-steel construction is presented for use in damp or otherwise challenging environments.

Cons

The distribution favors the smallest sizes. There are only 10 M10 and 8 M12 washers, so it may not suit work needing many larger washers.

Technical specifications

12 specifications

Identity
Brand	HELIFOUNER
Model	HELIFOUNER---Lock---Washer

Type and size
Washer type	Split Lock
Fastener sizes	M2 M2.5 M3 M4 M5 M6 M8 M10 M12
Thread sizes	M2, M2.5, M3, M4, M5, M6, M8, M10, M12
Fastener type	Spring Lock Washer
Compatibility	bolts, nuts, screws

Materials and finish
Material listed	Stainless Steel
Finish type	Polished
Color	Silver

Quantity and application
Number of pieces	900
Stated applications	automotive, electrical, marine

What to know before buying

Listing details to confirm

The listing title calls the set 304 stainless steel, while the technical material field says only “Stainless Steel.” The description lists 900 pieces and a plastic case with 200 each for M2, M2.5, and M3, 100 M4, 82 M5, 50 each M6 and M8, 10 M10, and 8 M12. Treat the 304 grade as a listing claim rather than a verified material specification.

Who is it for?

A good fit for

DIY and repair users who need metric split lock washers in several sizes.
Projects using matching metric screws, nuts, or bolts in the listed automotive, electrical, marine, household, or workshop contexts.
Buyers whose expected use is concentrated in the smaller sizes included in larger quantities.

Less suited to

Work that needs a large quantity of M10 or M12 washers.
Buyers who require independently confirmed stainless-steel grade or exact material certification.

HELIFOUNER 900-Piece 304 Stainless Steel Spring Lock Washer Kit · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 141 ratings

5 stars74%74%
4 stars20%20%
3 stars5%5%
2 stars1%1%
1 star0%0%

The supplied evidence contains aggregate ratings but no written customer feedback, so it cannot establish specific praised features or explain lower ratings. The distribution is predominantly five- and four-star, with a small share of three- and two-star ratings. Consider this a broad rating signal rather than evidence of material grade, exact size consistency, or performance in a particular application.

Frequently asked questions

What sizes are included?

The listing names M2, M2.5, M3, M4, M5, M6, M8, M10, and M12. The package description gives quantities for each size.

How many washers are in the kit?

The listing states 900 pieces. Its package breakdown totals 900 across the nine listed sizes.

Is the material confirmed as 304 stainless steel?

The title and product description claim 304 stainless steel, but the technical material field says only “Stainless Steel.” The grade is therefore a listing claim, not independently confirmed.

Does the kit include a storage case?

The product description says the washers come in a plastic case.