What size drill bit is needed for install?

Hello, Thank you for your question, The mounting hole size of the rivet nut is 6.9mm, The mounting hole size of the screw is 5.2mm.

What is the maximum thickness of material the rivenuts can fasten through ?

Hello, I'm glad to answer your question. The M5 riveting nut can be used for steel plates of 0.5-3mm thickness. Gaskets and screws and nuts are made of stainless steel. The specific size can be referred to the second image of listing. Thank you

are these washers solid? (ie., flat on the bottom)

Hi, The washer is made of stainless steel CNC, The bottom is a solid plane.

What size drill but to make holes in my fenders?

Hello This rivet nut size is M5 and its bottom hole requires 7mm. So you need to drill 7mm holes. Thank you

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Stainless Steel 25 Pcs Fender Bumper Washer Bolt M5x18mm CNC Finishing Washer Engine Bay Dress Up Fastener Kit Flares Widebody kit Installation hardware

Stainless Steel 25 Pcs Fender Bumper Washer Bolt M5x18mm CNC Finishing Washer Engine Bay Dress Up Fastener Kit Flares Widebody kit Installation hardware

Product ID: 346733153

Details

Size
#5-20
Colour
Stainless
Material
Stainless
Brand
STETION
Item dimensions L x W x H
18 x 18 x 3

🔩25PCS premium stainless steel fasteners

⚙️M5x18mm bolts with extended threaded length

🛠️CNC-machined precision & included hex wrench

$68.10

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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Description

🔧 Elevate your ride’s style with precision-engineered fasteners that mean business.

EXTENDED M 5 X 18 MM BOLTS - Longer threaded bite for secure, reliable fastening every time.
HASSLE FREE INSTALLATION - Includes inner hex wrench to eliminate tool size guesswork and speed up your build.
PRECISION CNC MACHINED HARDWARE - Engineered for durability and rust-free performance under pressure.
COMPLETE 25 PIECE STAINLESS STEEL KIT - Everything you need for flawless widebody and fender installs.
UNIVERSAL FIT FOR AUTOMOTIVE DRESS UP - Perfect for fenders, bumpers, ducktails, and engine bay upgrades.

This 25-piece fastener kit features premium CNC-machined stainless steel washers, rivet nuts, and M5x18mm bolts designed for automotive widebody kits and fender installations. Each component is salt spray tested for corrosion resistance, ensuring long-lasting durability. The included inner hex wrench streamlines installation, making it the go-to hardware upgrade for professional-grade vehicle dress-up projects.

Specifications

ASIN	B087Q24GMN
Brand	STETION
Colour	Stainless steel
Compatible Groove Diameter	5.5 Millimeters
Fastener Type	Bolt, Rivet
Finish Types	Plain
Item Diameter	5 Millimetres
Item Dimensions	18 x 18 x 3 Millimeters
Item Shape	Round, Cylindrical
Item dimensions L x W x H	18 x 18 x 3 Millimeters
Manufacturer	STETION
Material	Stainless Steel
Material Type	Stainless Steel
Model	SH-0427-A
Number Of Items	25
Number of Pieces	25
Part Number	SH-0427-A
Screw Head Style	Hex
Size	#5-20
Size Name	#5-20
Thread Size	M5x18mm
UPC	756588129656
Unit Count	1.0 Count

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$68.10

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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