Are these copper, or brass? specs section says material: copper. and the screws are obviously neither.

Hi friend, The standoffs/spacers are made of durable brass,screws and nuts are made of stainless steel. We have updated the material, sorry about the inconvenience. best regards, Geekworm Team

Will these cause ground loops via electrical connection to the hat/bonnet board from the thru-plated holes?

It depends. If the hat or bonnet has pads around the screw/mounting hole, you can always use nylon washers. However, some screw/mounting holes have copper pads which have no connection to ground or anything else. If in doubt use a multimeter. Or nylon washers. ... Cheers

Can these be used as standard pc spacers ?

Hi friend, The spacers are M2.5 series with follow specifications: 4 x M2.5x12+6mm Spacers 32 x M2.5 x 5mm Screws 32 x M2.5 Nuts 16 x M2.5x5 +5mm Spacers 16 x M2.5x11mm Spacers 16 x M2.5x11+6mm Spacers 16 x M2.5x20+6mm Spacers Please check and confirm if your PC use M2.5 or M3 spacers, thanks! best regards, Geekworm Team

Are these the proper dimensions for a Pi 3? I read elsewhere that the Pi 3 is 3mm...

These spacers work for me with a Pi3. The tallest spacers will clear the Pi's USB ports. The next tallest will clear all the components but not the UAT ports. The others I have not used with a Pi3.

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Geekworm for Raspberry Pi Installation Tool 100 Pcs/Lot M2.5 Series Hex Brass Spacer/Standoffs + Nuts + Screws w/Storage Case for Raspberry Pi 5/4B/3B+/3B/3A+/Zero W/2W Accessories Kit

Geekworm for Raspberry Pi Installation Tool 100 Pcs/Lot M2.5 Series Hex Brass Spacer/Standoffs + Nuts + Screws w/Storage Case for Raspberry Pi 5/4B/3B+/3B/3A+/Zero W/2W Accessories Kit

Product ID: 47695326

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Details

Material
Brass
Head Style
Hex
Item dimensions L x W x H
3.07 x 2.56 x
Exterior Finish
Stainless
Thread Size
M2.5

📦Compact storage case for organized portability

🔩Precision fit for Raspberry Pi 5/4B/3B+ GPIO expansion

🛠️100 pcs M2.5 hex brass spacers & stainless steel screws

Description

🔧 Elevate your Raspberry Pi game with precision and style!

PORTABLE ORGANIZED - Compact case design means your essential Pi hardware accessories are always ready to go—never lose a screw again.
COMPLETE 100 PIECE KIT - All-in-one set with spacers, nuts, screws, and a sleek storage box to keep your workspace clutter-free.
PERFECT RASPBERRY PI FIT - Tailored M2.5 spacers & screws ensure flawless HAT installation across Pi 5, 4B, 3B+ and more.
OPTIMIZED HEIGHT FOR GPIO - 11mm spacer height matches GPIO pin expansion boards for secure, stable connections every time.
DURABLE BRASS STAINLESS STEEL - Premium corrosion-resistant materials built to last through countless projects and upgrades.

The Geekworm 100-piece M2.5 installation kit offers a comprehensive set of brass spacers, stainless steel screws, and nuts designed specifically for Raspberry Pi models 5, 4B, 3B+, and others. Engineered for perfect GPIO HAT compatibility with an 11mm spacer height, this durable, corrosion-resistant kit comes neatly packed in a portable storage case, making it an essential accessory for professional makers and Pi enthusiasts aiming for flawless hardware assembly.

Specifications

Material	Brass
Head Style	Hex
Exterior Finish	Stainless Steel,Brass
Thread Size	M2.5
Metal Type	Brass, Stainless Steel
Brand	Geekworm
Color	Raspberry Pi M2.5 100Pcs / Lot
Head Type	Hex
Item Weight	0.14 Kilograms
Thread Coverage	Fully Threaded
Fastener Type	spacers standoffs screws nuts
Set Screw Thread Type	Metric (M)
Thread Style	Left Hand
Fastener Size	M2.5
Size	One Size
Item Diameter	2.5 Millimeters
Compatible groove diameter	2.5 Millimeters
Number of Pieces	120
UPC	642940884946
Item model number	TB-479042
Hardware Platform	Raspberry Pi 3 Model B+ / Pi3 B / 2B / Raspberry Pi Zero w
Item Weight	4.9 ounces
Item Dimensions LxWxH	3.07 x 2.56 x 0.79 inches
Manufacturer	Geekwrom
ASIN	B0756CW6Y2
Is Discontinued By Manufacturer	No
Date First Available	August 28, 2017

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