screw caps
Worth a lookShows sweet-spot pricing room ($4.91–$49.89), but a small market ($90K/yr) keeps it on the watch list.
Price range
Great$4.91–$49.89cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good44%top-5 click share — leaders hold, buyers still browse
Review moat
Good806.62avg incumbent reviews — the moat a new listing must climb
Brand share
Good66%top-5 brand share — brands hold most of the demand
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Okay3.6%search→purchase rate — share of searches ending in a sale
Returns
Okay3.6%return rate — above 5% kills the launch gate
Growth
Okay+13.0%90-day search growth — must beat 0% to launch
Avg price
Okay$9.14avg 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
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.No pronounced peak months · busiest ÷ quietest = 1.5×
Top screw caps search terms
- screw caps48K/yr
- screw covers caps43K/yr
- screw covers39K/yr
- screw cap covers24K/yr
- caps for screws16K/yr
- screw cover13K/yr
- plastic screw caps13K/yr
- screw cap11K/yr
- screw head covers9K/yr
- screw cover caps7K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Large Black)
Hotop$6.604.4★3,208 rev
Mini Skater 200Pcs White Plastic Self-Tapping Screw Cap Covers 7mm Diameter Hard & Durable Furniture Fittings
Mini Skater$4.913.9★169 rev
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$4.924.4★1,005 rev
Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Medium White)
Hotop$6.894.4★3,208 rev
RV Designer H603 Screw Covers Black 14 Per Pack Interior Hardware
RV Designer$7.884.6★923 rev
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$8.9640 rev
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$8.8929 rev
150 Pcs Screw Cap Covers 12mm Screws Caps White Waterproof Self Tapping Cap Decorative Plastic Screws Caps for Diameter 7-8mm Self Tapping
Eldraqth$5.7817 rev
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$8.3426 rev
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$4.99330 rev
Trending
90-day click momentumRABECH 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$8.894.6★
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$8.964.7★
Hotop 100 Pieces Hinged Screw Cover Caps Plastic Shutter Fold Screw Snap Covers Washer Flip Tops(Medium White)
Hotop$6.894.4★
150 Pcs Screw Cap Covers 12mm Screws Caps White Waterproof Self Tapping Cap Decorative Plastic Screws Caps for Diameter 7-8mm Self Tapping
Eldraqth$5.784.0★
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$8.954.4★
What buyers say about screw caps
What buyers praise and complain about, mined from review topics.What buyers love
“Good variety and assortment”
“good value for money”
“As advertised”
“Nice variety of sizes”
“which is easy to open”
“works great”
“The caps feel durable and have a good balance of softness and thickness”
“Color is spot on”
“Great Invention”
“the material feels overall identical”
What buyers complain about
“way too small”
“cheap product”
“Adhesive its not strong enough”
“Poor advertisement”
“These started to come off within minutes”
“I didn't realize these are plastic”
“The product is not consistent with the thickness some stay in place most dont”
“Not pure white”
“Doesnt work for me”
“Not stretchable, very hard to cap an instrument with these”
Top return reasons
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.