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62

m3 ネジ

Worth a look

Shows a $3.3M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 96Growth 23Conversion 40Competition 62Returns 96Price range 0Avg price 0Brand share 80Review moat 96Quality gap 82

Market size

Incredible¥3.3M

¥3.3M/yr · 121K searches

Review moat

Incredible81.63

avg incumbent reviews — the moat a new listing must climb

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Brand share

Great55%

top-5 brand share — no brand owns this niche

Competition

Good48%

top-5 click share — leaders hold, buyers still browse

Conversion

Okay3.2%

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

Growth

Bad-5.0%

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

Avg price

Bad¥855.87

avg listing price — sweet spot $15–$100

Price range

Bad¥256.40–¥1712.94

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

According to Flapen's Amazon Japan niche tracking, m3 ネジ is a ¥3.3M/yr Amazon Japan market (121K searches/yr). The top 5 brands hold 55% of demand. Verdict: Worth a look — 62/100.

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

m3 ネジ market data

Units sold / yr
3K–4K
avg 0–100/product
Revenue / yr
¥2.6M–¥3.4M
units × avg price
Conversion rate
3.2%
Avg BSR
#115
Page quality
0%
Prime
100%
Sponsored
71%
Out of stock
0.0%
Avg brand age
48 months
Avg seller age
165 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

25 flat

Sellers

67

Top-5 brand share

55%

Top 20: 95%

Top-5 click share

48%

Top 20: 82%

Open market

41%

  • Nivithi14%
  • Zmbroll13%
  • サムコス12%
  • Kinzomor10%
  • lewaul5%
  • Senyard5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.0% search growth over the last 90 days.
4K3KSpike '25Black Friday '25Prime Day '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top m3 ネジ search terms

  • m3 ネジ47K/yr
  • m3 ボルト13K/yr
  • m3 皿ネジ10K/yr
  • ネジ m312K/yr
  • 皿ネジ m35K/yr
  • ネジ 3mm4K/yr
  • 3mm ネジ3K/yr
  • m3ネジ2K/yr
All search terms

Top m3 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%4%¥132K8%¥264K12%¥396K16%¥528K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

What buyers say about m3 ネジ

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

What buyers love

コストパフォーマンス34%

“お値段以上”

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。”

使用の容易さ18%

“普通に使えます。”

総合品質9%

“特に問題なく使える”

メンテナンスと修理3%

“PC修理に活躍”

保管容量3%

“大容量なのがいい”

デザイン全体2%

“オシャレ”

効率2%

“色々と使える”

取り付け1%

“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。”

厚み1%

“作業に必要な太さがM5かM4かで迷い 長さもはみ出すかどうか自信がなかったので とても助かりました。”

What buyers complain about

組み立て/インストール22%

“おかげで機械の組み立てができなくなった。”

不良材料/部品11%

“容器の留め具が一度開けただけで破損したのは正直ショックだった”

広告と実際の製品の違い11%

“名称がややこしいですが、商品写真の通りボタン頭型の六角穴付きねじです。”

商品の状態11%

“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。”

コストパフォーマンス11%

“価格が高いですね。”

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。”

接着性/粘着性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”

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”

使用の容易さ3%

“定規で測ってもM4でないと作業は難しかったので変更。”

Top return reasons

サイズ全体59%
不良材料/部品15%
取り付け7%
匂い4%
メンテナンスと修理4%
薄い4%
漏れ防止2%
広告と実際の製品の違い2%
総合品質2%
柔軟性2%

Common questions

Is m3 ネジ profitable to sell on Amazon Japan?
The niche generates ¥3.3M/yr across 38 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.0%. Flapen's verdict: Worth a look (62/100).
How competitive is the m3 ネジ niche?
25 brands and 67 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 55% of demand.
What do buyers complain about in m3 ネジ?
Top complaints mined from reviews: 組み立て/インストール, 不良材料/部品, 広告と実際の製品の違い. The return rate is 0.8%.
When does demand for m3 ネジ peak?
Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the m3 ネジ niche?
Listings span ¥256.40–¥1712.94; the average listing price is ¥855.87 (sweet spot $15–$100). The average incumbent carries 82 reviews — the moat a new listing must climb.