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58

ハトメ 4mm

Worth a look

Shows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 70Growth 28Conversion 48Competition 72Returns 98Price range 0Avg price 0Brand share 43Review moat 91Quality gap 96

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Review moat

Great187.22

avg incumbent reviews — the moat a new listing must climb

Competition

Good42%

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

Market size

Good¥734K

¥734K/yr · 24K searches

Conversion

Okay3.9%

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

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Growth

Okay+2.2%

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

Avg price

Bad¥781.79

avg listing price — sweet spot $15–$100

Price range

Bad¥254.51–¥2093.03

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

According to Flapen's Amazon Japan niche tracking, ハトメ 4mm is a ¥734K/yr Amazon Japan market (24K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Feb. Verdict: Worth a look — 58/100.

Data updated Jul 30, 2026 · scored weekly · How we score niches

ハトメ 4mm market data

Units sold / yr
1K–2K
avg 0–100/product
Revenue / yr
¥977K–¥1.2M
units × avg price
Conversion rate
3.9%
Avg BSR
#62
Page quality
0%
Prime
84%
Sponsored
65%
Out of stock
0.2%
Avg brand age
53 months
Avg seller age
203 days

Competition & brand share

The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

50

Top-5 brand share

79%

Top 20: 100%

Top-5 click share

42%

Top 20: 85%

Open market

15%

  • イチネンアクセス ツール事業部47%
  • サンドリー(Sundry)10%
  • COOLBOTANG9%
  • クラフトパーツ屋7%
  • KUKU工房6%
  • Harvest mart6%
  • Open — no brand owns it (9 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.2% search growth over the last 90 days.
800600Spike '24Holiday '24Spike '25Prime Day '25Holiday '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: Feb · busiest ÷ quietest = 2.0×

Top ハトメ 4mm 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%¥22K6%¥44K9%¥66K12%¥88K101001K 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 ハトメ 4mm

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

What buyers love

使用の容易さ38%

“有れば便利”

サイズ全体8%

“内径はノギスで測っていたのでピッタリフィット。”

握り心地7%

“ハトメパンチのグリップが握りやすく、軽い力できれいに留めることができます。”

総合品質6%

“ちゃんと出来ました!!”

コストパフォーマンス6%

“解って購入するならコスパは良いと思います”

軽い6%

“軽くて安い”

4%

“カラフルで安いのは良かったのですが”

縫い目/仕上げ/磨き3%

“仕上がりも満足できるものでした。”

保管容量3%

“収納にも場所取らず私にはちょうど良かったです。”

広告と実際の製品の違い3%

“出来栄えは、商品画像のような感じです。”

What buyers complain about

コストパフォーマンス11%

“値上がり”

サイズ全体9%

“サイズを間違えて発注。”

硬い感覚7%

“硬い”

総合品質7%

“使い物にならない 粗悪品。”

強さ6%

“ポンチの強度が少し弱いようですね。”

不良材料/部品6%

“止める部分がグラグラしているので、このような仕様なのか私のが不良品だったのかは不明です。”

6%

“各色 個数がバラバラ”

握り心地6%

“噛み合わせに問題あり”

厚み6%

“厚さ0.7mmほどしか無かったのですがしっかりハトメを取り付けられました。”

使用説明書/ユーザーマニュアル/トラブルシューティング5%

“説明書を読まないとプライヤーのコマにどっちのハトメを付けるのか分からず悩みました。”

Top return reasons

サイズ全体45%
不良材料/部品12%
機能全体9%
互換性-全体7%
メカニズムの問題6%
広告と実際の製品の違い5%
強さ4%
材料の品質2%
握り心地2%
平坦さ2%

Common questions

Is ハトメ 4mm profitable to sell on Amazon Japan?
The niche generates ¥734K/yr across 37 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +2.2%. Flapen's verdict: Worth a look (58/100).
How competitive is the ハトメ 4mm niche?
15 brands and 50 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 79% of demand.
What do buyers complain about in ハトメ 4mm?
Top complaints mined from reviews: コストパフォーマンス, サイズ全体, 硬い感覚. The return rate is 0.4%.
When does demand for ハトメ 4mm peak?
Demand peaks in Feb; the busiest month runs 2.0× the quietest.
What does it cost to enter the ハトメ 4mm niche?
Listings span ¥254.51–¥2093.03; the average listing price is ¥781.79 (sweet spot $15–$100). The average incumbent carries 187 reviews — the moat a new listing must climb.