Skip to content
63

m2.5 ネジ

Worth a look

Shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 76Growth 23Conversion 59Competition 80Returns 97Price range 0Avg price 0Brand share 78Review moat 96Quality gap 79

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Review moat

Incredible79.64

avg incumbent reviews — the moat a new listing must climb

Competition

Great35%

top-5 click share — an open shelf

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Brand share

Great57%

top-5 brand share — no brand owns this niche

Market size

Great¥928K

¥928K/yr · 20K searches

Conversion

Good5.1%

search→purchase rate — share of searches ending in a sale

Growth

Bad-4.8%

90-day search growth — must beat 0% to launch

Avg price

Bad¥925.18

avg listing price — sweet spot $15–$100

Price range

Bad¥317.87–¥1770.16

cheapest to priciest tracked listing — scored on the share inside $15–$100

According to Flapen's Amazon Japan niche tracking, m2.5 ネジ is a ¥928K/yr Amazon Japan market (20K searches/yr). The top 5 brands hold 57% of demand. Verdict: Worth a look — 63/100.

Data updated Jul 31, 2026 · scored weekly · How we score niches

m2.5 ネジ market data

Units sold / yr
750–1K
avg 0–100/product
Revenue / yr
¥694K–¥925K
units × avg price
Conversion rate
5.1%
Avg BSR
#203
Page quality
0%
Prime
100%
Sponsored
74%
Out of stock
5.0%
Avg brand age
45 months
Avg seller age
202 days

Competition & brand share

Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.

Brands

27 rising

Sellers

30

Top-5 brand share

57%

Top 20: 95%

Top-5 click share

35%

Top 20: 78%

Open market

38%

  • Zmbroll28%
  • XSAJU9%
  • VGEBY8%
  • Ysintl7%
  • YUHENGCT5%
  • nejico(ネジコ)5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.8% search growth over the last 90 days.
450350Spike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top m2.5 ネジ search terms

  • m2.5 ネジ12K/yr
  • m2.54K/yr
  • m2.5 皿ネジ4K/yr
All search terms

Top m2.5 ネジ products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%¥28K6%¥56K9%¥84K12%¥111K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about m2.5 ネジ

What buyers praise and complain about, mined from review topics.

What buyers love

使用の容易さ34%

“普通に使えています。”

サイズ全体21%

“大量に使う状況になっても、とりあえずこのセットで必要なサイズを確認してから. 追加で購入するという手段が使えます。”

コストパフォーマンス13%

“コスパ良し”

総合品質7%

“特に問題なく使える”

メンテナンスと修理7%

“PC修理に活躍”

正しい内容2%

“合計430個という圧倒的なボリュームは、一度購入すれば長期間にわたってネジ不足に悩まされることがなくなるほどの安心感を提供してくれます。”

取り付け2%

“汎用的なプラスネジで必要なサイズが入っており役に立ちました。”

保管容量2%

“ケースもしっかりしており、使用にも保管にも不自由しません、ありがとうございました。”

What buyers complain about

使用の容易さ17%

“ネジが混ざってしまい使いづらい”

接着性/粘着性17%

“普通の鉄にメッキをしたものだともっとガチっとくっつきますが弱くくっつく感じなので恐らくちゃんとステンレスかと”

不良材料/部品13%

“パーツをしっかりと固定するのには向きません。”

商品の状態13%

“箱が新品とは思えないほど、残念でしたが、ねじは大丈夫で、FMV LIFEBOOK の換装に使いました。”

組み立て/インストール13%

“施工のミスから1サイズ長いネジが必要になり、こっちを選択しておいて助かりました。”

サイズ全体4%

“一番小さいものは本当に小さいので、小柄な物向けの商品です。”

強さ4%

“プラスチックケースが弱く割れてたり、またしきりがすぐ浮き上がってしまい、ネジが混ざってしまい使いづらい。”

材料の品質4%

“普通の鉄にメッキをしたものだともっとガチっとくっつきますが弱くくっつく感じなので恐らくちゃんとステンレスかと”

Top return reasons

サイズ全体53%
不良材料/部品23%
互換性-全体13%
漏れ防止7%
取り付け3%

Common questions

Is m2.5 ネジ profitable to sell on Amazon Japan?
The niche generates ¥928K/yr across 42 tracked products. 3 of 12 products launched in the last 360 days are still selling. 90-day search growth is -4.8%. Flapen's verdict: Worth a look (63/100).
How competitive is the m2.5 ネジ niche?
27 brands and 30 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 57% of demand.
What do buyers complain about in m2.5 ネジ?
Top complaints mined from reviews: 使用の容易さ, 接着性/粘着性, 不良材料/部品. The return rate is 0.5%.
When does demand for m2.5 ネジ peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the m2.5 ネジ niche?
Listings span ¥317.87–¥1770.16; the average listing price is ¥925.18 (sweet spot $15–$100). The average incumbent carries 80 reviews — the moat a new listing must climb.