---
title: "Screw Caps — $90K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/screw-caps"
last_updated: "2026-08-08T16:43:33.407Z"
locale: en
meta:
description: "Niche score 50/100 · $90K/yr market · 269K searches/yr · $9.14 avg price. A small market ($90K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $90K/yr market · 269K searches/yr · $9.14 avg price. A small market ($90K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Screw Caps — $90K/yr Amazon US Niche (2026) - Flapen"
---
# **screw caps**
**Worth a look**
Shows sweet-spot pricing room ($4.91–$49.89), but a small market ($90K/yr) keeps it on the watch list.
Market size 22Growth 41Conversion 46Competition 68Returns 43Price range 77Avg price 26Brand share 66Review moat 67Quality gap 62
**Price range**
**Great****$4.91–$49.89**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****44%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Good****806.62**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****3.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.6%**
return rate — above 5% kills the launch gate
**Growth**
**Okay****+13.0%**
90-day search growth — must beat 0% to launch
**Avg price**
**Okay****$9.14**
avg listing price — sweet spot $15–$100
**Market size**
**Bad****$90K**
$90K/yr · 269K searches
According to Flapen's Amazon United States niche tracking, screw caps is a $90K/yr Amazon United States market (269K searches/yr). The top 5 brands hold 66% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **screw caps market data**
- **Units sold / yr**
- **10K–13K**
- avg 250–500/product
- **Revenue / yr**
- **$91K–$114K**
- units × avg price
- **Conversion rate**
- **3.6%**
- **Avg BSR**
- **#330**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **85%**
- **Out of stock**
- **1.8%**
- **Avg brand age**
- **34 months**
- **Avg seller age**
- **178 days**
## **Competition & brand share**
The top 5 products take 44% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▼falling
**Sellers**
**44**
**Top-5 brand share**
**66%**
Top 20: 99%
**Top-5 click share**
**44%**
Top 20: 87%
**Open market**
**29%**
- Hotop24% - Mini Skater13% - Eersida11% - Aleric9% - HNYYZL8% - RABECH5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +13.0% search growth over the last 90 days.
6K4KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/screw-caps/trend)
## **Top screw caps search terms**
- **screw caps**48K/yr+28.2%2.7% conv. - **screw covers caps**43K/yr+9.4%3.4% conv. - **screw covers**39K/yr+11.8%2.8% conv. - **screw cap covers**24K/yr+0.2%2.3% conv. - **caps for screws**16K/yr+16.9%1.5% conv. - **screw cover**13K/yr+10.0%2.2% conv. - **plastic screw caps**13K/yr+1.2%2.9% conv. - **screw cap**11K/yr+14.9%2.0% conv. - **screw head covers**9K/yr+9.2%3.4% conv. - **screw cover caps**7K/yr+30.2%1.9% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/screw-caps/search-terms)
## **Top screw caps 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%$4K8%$7K12%$11K16%$14K101001K10K Reviews — right = deep review moatMarket 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.
### **Top sellers**
by 90-day click share
[1**Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Large Black)**Hotop**$6.60**4.4★3,208 rev](https://www.amazon.com/dp/B0C5DT97PS) [2**Mini Skater 200Pcs White Plastic Self-Tapping Screw Cap Covers 7mm Diameter Hard & Durable Furniture Fittings**Mini Skater**$4.91**3.9★169 rev](https://www.amazon.com/dp/B0BN1MFHF4) [3**Aleric Rubber End Caps - 60pcs Flexible Screw Thread Protector Covers Rubber Bolt Covers Caps for Metal Tube Rod in 6 Sizes 2mm 3mm 6.5mm 8mm 10mm 12mm**Aleric**$4.92**4.4★1,005 rev](https://www.amazon.com/dp/B09M47FKVK) [4**Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Medium White)**Hotop**$6.89**4.4★3,208 rev](https://www.amazon.com/dp/B0911RWMRB) [5**RV Designer H603 Screw Covers Black 14 Per Pack Interior Hardware**RV Designer**$7.88**4.6★923 rev](https://www.amazon.com/dp/B003ZOLWGE)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**RABECH Rubber End Caps Kit Round Bolt Covers Caps 13 Sizes 2/25 Inch to 4/5 Inch Screw Thread Protectors Cap Vinyl Rubber End Cap Tips for Bolts Screws**RABECH**$8.96**40 rev6mo ago](https://www.amazon.com/dp/B0GF89NHCK) [**RABECH Hex Acorn Nuts Cap Assortment Kit 6Sizes 116Pcs M3 M4 M5 M6 M8 M10 Black and White Nylon Bolt Covers Caps Nut Screw Covers for Protection Indoor Outdoor**RABECH**$8.89**29 rev6mo ago](https://www.amazon.com/dp/B0GF8BHP2X) [**150 Pcs Screw Cap Covers 12mm Screws Caps White Waterproof Self Tapping Cap Decorative Plastic Screws Caps for Diameter 7-8mm Self Tapping**Eldraqth**$5.78**17 rev9mo ago](https://www.amazon.com/dp/B0FX4LVZWX) [**ZIUZI 24 Pcs Stainless Steel Screw Cover Cap 0.63/16mm Diameter Mirror Screw Cap Decorative Screws Cover Fasteners for Furniture Mirrors Signage and Advertising Hardware**ZIUZI**$8.34**26 rev1y ago](https://www.amazon.com/dp/B0DMDTM19W) [**3 Sheets 290 Pcs Screw Hole Cover Stickers 12 mm/15 mm/21 mm White Screw Covers Self-Adhesive Caps Wood Stickers for Furniture (White)**Wenreykeji**$4.99**330 rev1y ago](https://www.amazon.com/dp/B0DHL1GXMP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**RABECH Hex Acorn Nuts Cap Assortment Kit 6Sizes 116Pcs M3 M4 M5 M6 M8 M10 Black and White Nylon Bolt Covers Caps Nut Screw Covers for Protection Indoor Outdoor**RABECH**$8.89**4.6★**▲ 239%**](https://www.amazon.com/dp/B0GF8BHP2X) [**RABECH Rubber End Caps Kit Round Bolt Covers Caps 13 Sizes 2/25 Inch to 4/5 Inch Screw Thread Protectors Cap Vinyl Rubber End Cap Tips for Bolts Screws**RABECH**$8.96**4.7★**▲ 204%**](https://www.amazon.com/dp/B0GF89NHCK) [**Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Medium White)**Hotop**$6.89**4.4★**▲ 166%**](https://www.amazon.com/dp/B0911RWMRB) [**150 Pcs Screw Cap Covers 12mm Screws Caps White Waterproof Self Tapping Cap Decorative Plastic Screws Caps for Diameter 7-8mm Self Tapping**Eldraqth**$5.78**4.0★**▲ 136%**](https://www.amazon.com/dp/B0FX4LVZWX) [**GORGECRAFT 1 Box 200Pcs 8 Colors Hinged Screws Cover Caps Fold Snap Covers Plastic Shutter Screw Caps Washer Flip Tops Furniture Fence Hole Plug for Covering Screw Heads Decorative Protection(M)**GORGECRAFT**$8.95**4.4★**▲ 62%**](https://www.amazon.com/dp/B0CCR28P6M)
**~~View all trending →~~**
## **What buyers say about screw caps**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Good variety and assortment”*
**Value For Money**14%
*“good value for money”*
**Advertised Vs Actual Product**13%
*“As advertised”*
**Size-Overall**13%
*“Nice variety of sizes”*
**Ease Of Use**4%
*“which is easy to open”*
**Efficiency**4%
*“works great”*
**Durability**4%
*“The caps feel durable and have a good balance of softness and thickness”*
**Color**4%
*“Color is spot on”*
**Design-Overall**3%
*“Great Invention”*
**Material Quality**3%
*“the material feels overall identical”*
### **What buyers complain about **
**Size-Overall**26%
*“way too small”*
**Quality-Overall**10%
*“cheap product”*
**Adhesion/Stickiness**9%
*“Adhesive its not strong enough”*
**Advertised Vs Actual Product**6%
*“Poor advertisement”*
**Durability**4%
*“These started to come off within minutes”*
**Material Quality**4%
*“I didn't realize these are plastic”*
**Thickness**4%
*“The product is not consistent with the thickness some stay in place most dont”*
**Color**4%
*“Not pure white”*
**Functionality-Overall**3%
*“Doesnt work for me”*
**Stretchability/Expandability/Elasticity**2%
*“Not stretchable, very hard to cap an instrument with these”*
### **Top return reasons **
**Size-Overall**70%
**Advertised Vs Actual Product**5%
**Functionality-Overall**5%
**Adhesion/Stickiness**5%
**Color**4%
**Quality-Overall**2%
**Defective Material/Parts**1%
**Material Quality**1%
**Compatibility-Overall**1%
**Value For Money**1%
## **Common questions**
- **Is screw caps profitable to sell on Amazon United States?**
- The niche generates $90K/yr across 34 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is +13.0%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the screw caps niche?**
- 21 brands and 44 sellers compete. The top 5 products take 44% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in screw caps?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Adhesion/Stickiness. The return rate is 3.6%.
- **When does demand for screw caps peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the screw caps niche?**
- Listings span $4.91–$49.89; the average listing price is $9.14 (sweet spot $15–$100). The average incumbent carries 807 reviews — the moat a new listing must climb.
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