4an to 1/8 npt
Skip itBrand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Returns
Great2.0%return rate — above 5% kills the launch gate
Review moat
Good525.36avg incumbent reviews — the moat a new listing must climb
Avg price
Okay$11.12avg listing price — sweet spot $15–$100
Growth
Okay+10.6%90-day search growth — must beat 0% to launch
Price range
Okay$6.00–$18.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad72%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$40K$40K/yr · 40K searches
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, 4an to 1/8 npt is a $40K/yr Amazon United States market (40K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Apr. Verdict: Skip it — 36/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
4an to 1/8 npt market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- $56K–$67K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #215
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 93%
- Out of stock
- 0.0%
- Avg brand age
- 50 months
- Avg seller age
- 212 days
Competition & brand share
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 falling
Sellers
29
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
72%
Top 20: 100%
Open market
0%
- EVIL ENERGY59%
- Podavelle15%
- Ucreative9%
- KOOTANS8%
- Vibrant Performance4%
- lanstixr4%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 62 weeks — +10.6% search growth over the last 90 days.Peak months: Apr · busiest ÷ quietest = 1.9×
Top 4an to 1/8 npt search terms
- 1/8 npt14K/yr
- 4an to 1/8 npt8K/yr
- 1/8 npt to 4an7K/yr
- 1/8 npt fitting5K/yr
- 1/8 brass fittings3K/yr
- 1/8npt to 4an3K/yr
Top 4an to 1/8 npt 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 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
EVIL ENERGY 4AN Male Flare to 1/8 NPT Pipe Fitting Adapter Aluminum Straight Black 2PCS
EVIL ENERGY$9.904.8★2,149 rev
EVIL ENERGY 4AN to 1/8 NPT Male 90 Degree Fitting Adapter Aluminum
EVIL ENERGY$10.094.8★1,393 rev
Ucreative 4AN Male Flare to 1/8 NPT Pipe Fitting Adapter Aluminum Straight Black 2Pcs
Ucreative$6.634.6★362 rev
KOOTANS 4pcs Brass Hose Barb Fittings 1/4 Hose Barb to 1/8 NPT Male Thread Air Hose Fittings Brass Quick Coupler Air M Type Adapter Connector Fitting
KOOTANS$7.004.7★1,619 rev
EVIL ENERGY 4AN Male Flare to 1/8 NPT Pipe Fitting Adapter Stainless Steel Straight
EVIL ENERGY$12.024.8★55 rev
Newest
by launch date
Lanstixr 4AN Male Flare to 1/8 NPT Male Hose Pipe Fitting Adapter Union Connector Aluminum Straight Black Anodized 2PCS
lanstixr$6.0033 rev
Podavelle 4AN Male Flare to 1/8 NPT Pipe Male Stainless Steel Straight Fitting Adapter Union Connector 2PCS
Podavelle$17.7498 rev
EVIL ENERGY 4AN Male Flare to 1/8 NPT Pipe Fitting Adapter Stainless Steel Straight
EVIL ENERGY$12.0255 rev
Podavelle 4AN Male Flare to 1/8 NPT Pipe Male 90 Degree Elbow Fitting Adapter Union Aluminum Black Pack of 2
Podavelle$16.84504 rev
KOOTANS 12pcs Brass Pipe Fitting NPT Hex Nipple Coupling 1/8 x 1/8 NPT Male Pipe 1/8 x 1/8 NPT Female Pipe Fittings Set (6 Nipple & 6 Coupling)
KOOTANS$9.8595 rev
Trending
90-day click momentumLanstixr 4AN Male Flare to 1/8 NPT Male Hose Pipe Fitting Adapter Union Connector Aluminum Straight Black Anodized 2PCS
lanstixr$6.004.6★
Podavelle 4AN Male Flare to 1/8 NPT Pipe Male Stainless Steel Straight Fitting Adapter Union Connector 2PCS
Podavelle$17.744.8★
Podavelle 4AN Male Flare to 1/8 NPT Pipe Male 90 Degree Elbow Fitting Adapter Union Aluminum Black Pack of 2
Podavelle$16.844.8★
KOOTANS 12pcs Brass Pipe Fitting NPT Hex Nipple Coupling 1/8 x 1/8 NPT Male Pipe 1/8 x 1/8 NPT Female Pipe Fittings Set (6 Nipple & 6 Coupling)
KOOTANS$9.854.6★
EVIL ENERGY 4AN Male Flare to 1/8 NPT Pipe Fitting Adapter Stainless Steel Straight
EVIL ENERGY$12.024.8★
What buyers say about 4an to 1/8 npt
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality”
“Fitting perfect”
“Please with this fitting had zero leaks”
“Great Quality AN Fitting”
“Its as described”
“Made it all come together”
“It Works, Just Saving It”
What buyers complain about
“Cheap material”
“Does not properly fit”
“poor design”
“cheap weak fittings”
Top return reasons
Common questions
- Is 4an to 1/8 npt profitable to sell on Amazon United States?
- The niche generates $40K/yr across 14 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +10.6%. Flapen's verdict: Skip it (36/100).
- How competitive is the 4an to 1/8 npt niche?
- 6 brands and 29 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in 4an to 1/8 npt?
- Top complaints mined from reviews: Material Quality, Size-Overall, Design-Overall. The return rate is 2.0%.
- When does demand for 4an to 1/8 npt peak?
- Demand peaks in Apr; the busiest month runs 1.9× the quietest.
- What does it cost to enter the 4an to 1/8 npt niche?
- Listings span $6.00–$18.82; the average listing price is $11.12 (sweet spot $15–$100). The average incumbent carries 525 reviews — the moat a new listing must climb.