what thickness is the M8 x 25mm washers?

The ones I bought where 6mm x25 which are a smidge less then the thickness of a 5 pence, so I would think 8mmx25 would be a little thicker as they maybe used for a stronger job.

Are they zinc coated or stainless steel?

The ones I received were bzp and definitely not stainless

What is the thickness of the washer?

About 1.5mm thick, it's strong, I used them to attach headboard struts to bed

What is the dimension inside, and will this fit my M8 80mm coach screw?

I bought these to use with 225 mm coach bolts so I see no reason why they should not be of use with any 8 mm bolt

M6 X 25mm Penny Washers 20 Pack 6mm X 25mm

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Description

🔧 Elevate your DIY game with premium washers that hold it all together!

BULK 20 PACK CONVENIENCE - Always have spares on hand—ideal for home repairs, garage projects, or on-the-go fixes.
GLOSSY ZINC PLATED FINISH - Sleek, rust-resistant surface that maintains a professional look and performance.
TRUSTED QUALITY ASSURANCE - Backed by responsive customer support with a 24-hour satisfaction guarantee.
DURABLE A 2 STAINLESS STEEL - Corrosion-resistant alloy steel ensures longevity in any DIY or professional project.
PRECISION ENGINEERED M 6 SIZE - Fits perfectly with standard M6 screws for reliable fastening every time.

The Harlington Group M6 x 25mm Penny Washers come in a convenient 20-pack of high-quality A2 stainless steel flat washers. Designed for M6 screws, these corrosion-resistant, zinc-plated alloy steel washers provide durable, reliable fastening for both professional and home repair projects. With a glossy finish and trusted quality assurance, they’re the essential hardware accessory for any toolkit.

Specifications

ASIN	B08P3QGKND
Best Sellers Rank	9,901 in DIY & Tools ( See Top 100 in DIY & Tools ) 50 in Washers
Brand Name	Harlington Group
Compatible Groove Diameter	0.6 Centimeters
Customer Reviews	4.4 out of 5 stars 657 Reviews
Exterior Finish	Stainless Steel
Exterior finish	Stainless Steel
Fastener Size	M6
Fastener Type	Flat Washer
Fastener size	M6
Finish Types	Glossy
Item Length	2.5 Centimetres
Item Thickness	2 Millimetres
Item Width	0.6 Centimetres
Item thickness	2 Millimetres
Manufacturer	Harlington Group
Manufacturer Part Number	HH-PennyWasher-20Pack
Material	Alloy Steel
Material Type	Alloy Steel
Metal	Stainless Steel
Number of Pieces	20
Outside Diameter	2.5 Centimetres
Outside diameter	2.5 Centimetres
Screw Head Style	Round
Size	6mm x 25mm
Thread Size	M6
Unit Count	20.0 count
Washer Type	Flat
Washer type	Flat

Reviews

K**E

As described

4.04.2026

D**R

good product.

Great for the intended purpose.

9.12.2025

F**S

Nice OS washer

Shiny and strong- resists rust.

3.03.2023

M**C

washers

good quality repair washers

28.08.2025

S**E

GOOD QUALITY

GOOD QUALITY ARRIVED PROMPTLY.

24.04.2025

M**N

Good quality product

Good quality product. Exactly what was required. Arrived very promptly. 100% satisfied.

13.03.2025

M**K

Getting the size right

These are simple washers advertised as for M10 fixing (see spec at bottom of page) , but they're not. The hole size is 10mm which means they won't fit a M10 bolt. My fault for reading it wrong but it should be more clear.

16.02.2022

I**E

Washer

Good solid washer

24.04.2025

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