Are they uv resistant rated. need them for a boat so the ones i use needs to be ultra violet rated.

Don’t know 100 percent certain that the material is UV resistant. My application is indoors for this particular product, with minimal sun exposure through “e” (Reduces UV transmission) glass. I have used “similar”caps (Home Depot) to protect kids from protruding screws on outdoor equipment and those hold well to weather extremes ice and continuous hot sun. And likely made of the same plastic material.

What is the screw size both "S" & "M" ?

Tony, the screw size for S can be a #5, #6, and or a #8 Screw. The hole diameter for the screw cover caps is 4MM or 0.16 inch. The screw size for M can be a #6, #8, and or a #10. In Metric, it would be a M3, M4, and or a M5. The M size hole diameter is 5MM or 0.19 inch. Edward M.

Is the 0.51 the inside measurement or the outside. If it’s the outside what is the inside measurement?

0.51 (13MM) is the outside measurement. The inside measurement is 0.16 (4MM)

Can M6 screws/bolts fit through these?

Screws yes, bolts no... unless they were recessed flush heads.

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100 Pcs Hinged Screw Caps Plastic Shutter,Large,Black | Snap Covers, Washer Flip Tops, Fold Screw Snap Covers for Screw Protection

Product ID: 537914826

Details

Brand
Hotop
Color
Black
Item Weight
0.1 kg
Material
Plastic
Product Dimensions
0.67"W x 0.2"H

📏Large size: 17mm diameter

🔩100 pcs for bulk projects

🛡️Durable waterproof plastic

€ 12.89

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Snap, Seal, and Style Your Space Like a Pro!

COMPACT YET IMPACTFUL - Large 17mm diameter covers fit most screws, providing a neat, professional look.
VERSATILE APPLICATION - Perfect for furniture, walls, offices, schools, and yards—blend protection with style.
EFFORTLESS SNAP ON DESIGN - Hinged caps attach easily, saving time and delivering a flawless finish every time.
BULK READY FOR ANY PROJECT - 100 hinged screw caps ensure you never run out during your home or office upgrades.
SLEEK DURABLE PROTECTION - Waterproof, fade-resistant plastic keeps screws rust-free and your surfaces pristine.

Hotop’s 100-piece set of large black hinged screw caps offers durable, waterproof plastic protection designed to prevent rust and enhance the aesthetic of your screws. With a convenient snap-on hinge and a 17mm diameter, these caps are perfect for professional-grade furniture, office, and home projects, ensuring long-lasting, neat finishes in bulk quantities.

Specifications

ASIN	B0C5DT97PS
Best Sellers Rank	#7,750 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Furniture Cups
Brand Name	Hotop
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (3,227)
Item Dimensions W x H	0.67"W x 0.2"H
Item Weight	0.1 kg
Manufacturer	Hotop
Manufacturer Part Number	Hotop-243999
Material Type	Plastic
Model Number	Hotop
Number of Items	100
Number of Packs	1
Unit Count	1 Count

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