1/8 npt tap
Skip itA small market ($78K/yr) — this niche doesn't clear our bar today.
Conversion
Incredible18.7%search→purchase rate — share of searches ending in a sale
Returns
Great1.7%return rate — above 5% kills the launch gate
Review moat
Good1,083.08avg incumbent reviews — the moat a new listing must climb
Avg price
Good$12.07avg listing price — sweet spot $15–$100
Price range
Okay$4.84–$20.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Brand share
Okay88%top-5 brand share — brands hold most of the demand
Growth
Bad-3.7%90-day search growth — must beat 0% to launch
Competition
Bad75%top-5 click share — a locked-up shelf
Market size
Bad$78K$78K/yr · 34K searches
According to Flapen's Amazon United States niche tracking, 1/8 npt tap is a $78K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 88% of demand. Verdict: Skip it — 41/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
1/8 npt tap market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $72K–$97K
- units × avg price
- Conversion rate
- 18.7%
- Avg BSR
- #9
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 83%
- Out of stock
- 2.1%
- Avg brand age
- 69 months
- Avg seller age
- 191 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 flat
Sellers
44
Top-5 brand share
88%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
8%
- Drill America40%
- RURITKIT22%
- Aceteel9%
- DECKRKAT8%
- Century Drill & Tool8%
- MorningRo4%
- Open — no brand owns it (3 brands, 8%)
Demand & seasonality
Weekly Amazon search volume, last 63 weeks — -3.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top 1/8 npt tap search terms
- 1/8 npt tap25K/yr
- 1/8-27 npt tap4K/yr
- 1/8 npt tap and drill bit3K/yr
- 1/8 pipe tap3K/yr
Top 1/8 npt tap 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.
All 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Drill America - POU1/8NPTW/DRILL 1/8 Carbon Steel NPT Pipe Tap and R High Speed Steel Drill Bit Set POU Series
Drill America$9.024.6★3,785 rev
RURITKIT 1/8-27 NPT Pipe Tap and R drill Set Carbon Steel Hand Threading Plumbing NPT Tap Set for Plumbers Mechanics DIY Thread cutting tools
RURITKIT$9.864.4★203 rev
Aceteel 1/8-27 Ti-Coated NPT Tap and R Drill Bit Set
Aceteel$13.214.4★183 rev
Drill America 1/8-27 NPT Pipe Tap Carbon Steel DWTPT Series
Drill America$4.844.7★3,497 rev
Century Drill & Tool 93201 National Pipe Thread Tap & Drill Combo Pack
Century Drill & Tool$12.024.6★1,915 rev
Newest
by launch dateAceteel 1/8-27 Ti-Coated NPT Tap and R Drill Bit Set
Aceteel$13.21183 rev
DECKRKAT 2-Piece 1/8 NPT Pipe Tap - High Carbon Steel Pipe Threading Tool 27 Threads Per Inch Precision Internal Tap for Plumbers Mechanics & DIY with Protective Case.
DECKRKAT$9.85795 rev
1/8-27 NPT Pipe Tap and R Drill Set M2 HSS Hand Threading Plumbing Tap
RURITKIT$15.44668 rev
ColumPRO 1/8-27 NPT Pipe Tap High-Speed Steel Thread Tap with AD+ Coating Heavy-Duty Threading Tool for Stainless Steel Brass PVC Metal
ColumPRO$10.3727 rev
RURITKIT 1/8-27 NPT Pipe Tap and R drill Set Carbon Steel Hand Threading Plumbing NPT Tap Set for Plumbers Mechanics DIY Thread cutting tools
RURITKIT$9.86203 rev
Trending
90-day click momentumAceteel 1/8-27 Ti-Coated NPT Tap and R Drill Bit Set
Aceteel$13.214.4★
DECKRKAT 2-Piece 1/8 NPT Pipe Tap - High Carbon Steel Pipe Threading Tool 27 Threads Per Inch Precision Internal Tap for Plumbers Mechanics & DIY with Protective Case.
DECKRKAT$9.854.6★
1/8 27 NPT Tapered Pipe Thread Tap High Speed Steel Pipe Thread Tap
LingGan$8.044.7★
5-Piece NPT Pipe Tap Set Precision Carbon Steel NPT Tap Set for Clean Accurate Threads 3/4 1/2 3/8 1/4 1/8 NPT Tap Perfect for Plumbers Mechanics DIYers with Durable Plastic Case
DECKRKAT$20.814.6★
Drill America - POU1/8NPTW/DRILL 1/8 Carbon Steel NPT Pipe Tap and R High Speed Steel Drill Bit Set POU Series
Drill America$9.024.6★
What buyers say about 1/8 npt tap
What buyers praise and complain about, mined from review topics.What buyers love
“Very well made”
“Work better than expected”
“GReat value”
“Good fit”
“Sharp n perfect”
“Solid Set”
“Worked and seems durable”
“Easy to use”
“It works for what I need it to”
“Worked great for my egt probe”
What buyers complain about
“Very poor quality control”
“These would damage your part rather than cut threads”
“Twisted and broke in half”
“The size is seem to be incorrect”
“bit dulled fast”
“Does not work”
“unusable tool that had to be refurbished by a die to make work”
“the tap would only cut about 1/4 before giving up”
“Tap Incompatible With NPT Threads”
“then it's too dull to use again”
Top return reasons
Common questions
- Is 1/8 npt tap profitable to sell on Amazon United States?
- The niche generates $78K/yr across 12 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -3.7%. Flapen's verdict: Skip it (41/100).
- How competitive is the 1/8 npt tap niche?
- 9 brands and 44 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 88% of demand.
- What do buyers complain about in 1/8 npt tap?
- Top complaints mined from reviews: Quality-Overall, Sharpness, Durability. The return rate is 1.7%.
- When does demand for 1/8 npt tap peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the 1/8 npt tap niche?
- Listings span $4.84–$20.81; the average listing price is $12.07 (sweet spot $15–$100). The average incumbent carries 1,083 reviews — the moat a new listing must climb.