Looking for the best M3 screws for your projects? We’ve tested and compared top M3 screw kits to help you find the perfect match for DIY, 3D printing, and electronics.
M3 screws are essential for DIY projects, 3D printing, and electronics. They come in various sizes and materials, making them versatile for many tasks. Choosing the right kit can save you time and effort.
These small fasteners play a big role in holding things together. Whether you’re a hobbyist or a professional, having a reliable assortment is key. We’ve tested and compared the best M3 screw kits to help you find the perfect match.
From stainless steel to alloy steel, each kit offers unique benefits. Discover which one fits your needs and makes your projects stronger and longer-lasting. Let’s dive in and find your ideal M3 screw kit!
List of Top 10 M3 Screws
| Image | Title | Best For | Price |
|---|---|---|---|
 |
Fgruh 2300PCS M3 Screws with Nuts Assortment Kit, M3x4/6/8/12/16/20/25/30/35 mm Hex Socket Button & Cap Head Bolts Nut and Washers Set, 12.9 & 10.9 Grade Black Zinc Plated for DIY, 3D Printer |
This kit is for DIY fans. It is for makers. Use it for RC cars. Use it for 3D prints. It is good for fix-it jobs. It has nuts and bolts. It is for handy folks. These screws are strong. They are small. You will like this kit. |
|
 |
600 Pcs M3 Screws Assortment Kit, M3x 6/8/10/12/16/20/25/30mm M3 Screw Kits 12.9 Alloy Steel Nuts and Bolts Assortment Kit Black Zinc Plated Hex Socket Head Screws Nuts Bolts and Washers Set |
This set is perfect for DIY fans, repair pros, and anyone who wants strong, easy‑to‑use M3 screws ready for any job. It also fits people who like tools that are simple, organized, and built to last. |
|
 |
Fgruh 750PCS M3 Screws Assortment Kit, M3x6/8/10/12/16/20/25/30 mm Hex Socket Head Bolts, Nuts & Washers Assorted Set – 12.9 Alloy Steel Black Zinc Plated M3 Screw for 3D Printer,DIY |
This set is perfect for makers, 3D printer users, DIY fans, and anyone who needs strong M3 screws for clean, precise work. |
|
 |
VGBUY 600pcs M3 Screw Assortment Kit, M3 Screws (8 Sizes 6-30mm) for 3D Printer DIY, Hex Socket Head Cap Screws Bolts Nuts Washer Kit, 304 Stainless Steel, 6/8/10/12/16/20/25/30mm |
This M3 Screw Assortment Kit is perfect for DIY enthusiasts, 3D printer users, and hobbyists working on small electronics, RC cars, or machinery repairs. It’s also great for anyone needing organized, high-quality screws for various projects. |
|
 |
380 Pcs M3 Black Flat Head Machine Screws and Hex Nuts Kit Carbon Steel Countersunk Head Phillips Screws Bolts Assortment,M3 x 4mm/ 6mm/ 8mm/ 10mm/ 12mm/ 16mm/ 20mm |
This 380-piece M3 screw and nut kit is perfect for anyone who needs reliable fasteners for DIY projects, electronics, machinery, or automotive repairs. Whether you’re a hobbyist, professional, or homeowner, this kit offers durable, easy-to-use screws and nuts for all your fastening needs. |
|
 |
500Pcs M3 Metric Screws Assortment Kit,hex Screws Socket Head Bolts,Nuts Washers Assorted Set,Hex Socket Head Cap Screws,12.9 Alloy Steel Black ScrewM3x6/8/10/12/16/20/25/30mm for 3D Printer,DIY |
This 500-piece M3 screw kit is perfect for DIY enthusiasts, professionals, and hobbyists working on 3D printing, home repairs, or small projects. It’s ideal for anyone needing durable, high-quality screws for crafts, machinery, or everyday fixes. |
|
 |
840 PCS M3 Screw Kit, M3 Hex Button Head Screws, Metric Machine Screw Assortment 8 Sizes 6MM to 30MM, 10.9 Grade Alloy Steel, Black Zinc Plated, with Hexagonal Wrench |
This M3 screw kit is perfect for anyone who loves DIY projects, repairs, or 3D printing. It’s great for home use, electronics, cars, and small fixes, making it ideal for both beginners and pros. |
|
 |
Kernmax 1120Pcs M3 Countersunk Screws Kit, M3 Flat Head Screws, Phillips Bolts Nuts Washers Set for 3D Printers, Electronics, Machinery & DIY Projects, Length 6MM-25MM, Zinc Plated |
This M3 screw kit is perfect for anyone who needs reliable fasteners for DIY projects, electronics, 3D printing, or machinery repairs. With its organized storage and rust-resistant design, it’s ideal for both beginners and professionals. |
|
 |
Kadrick M3 Screws Assortment Kit, 2240 Pcs – Hex Socket Button & Cap Head Metric M3 Bolts, 4-35mm Length with Nuts, Washers & Hex Key, 10.9/12.9 Grade Alloy Steel Screws for 3D Printer, DIY, RC Car |
This kit is perfect for makers, repair fans, and 3D printer users who need strong M3 screws in many sizes. It is also great for RC car and DIY work, with nuts, washers, and a hex key in one neat case. |
|
 |
uxcell M3 x 6mm 304 Stainless Steel Cross Head Phillips Pan Head Screws Bolt 60pcs |
This is perfect for DIY fans, repair work, and small builds. It is a smart pick for anyone who needs strong, clean, and easy-to-use screws. |
Detailed Reviews
Discover the top 10 M3 screws handpicked for DIY enthusiasts and professionals. Each kit offers durable materials, varied sizes, and organized storage for easy use. Whether for 3D printing, electronics, or home repairs, these screws ensure long-lasting performance. Find the perfect match for your projects and elevate your craftsmanship today.
1. Fgruh 2300PCS M3 Screws with Nuts Assortment Kit, M3x4/6/8/12/16/20/25/30/35 mm Hex Socket Button & Cap Head Bolts Nut and Washers Set, 12.9 & 10.9 Grade Black Zinc Plated for DIY, 3D Printer
The Fgruh 2300PCS M3 Screws with Nuts Assortment Kit is a must-have for DIY enthusiasts. It includes hex socket button and cap head bolts, nuts, and washers in various sizes. Perfect for 3D printing, electronics, and RC models.
Made from high-strength alloy steel, these screws are durable and corrosion-resistant. The black zinc plating ensures long-lasting use for indoor and light outdoor projects. Ideal for hobbyists and professionals alike.
The organized storage box keeps everything tidy and easy to find. Clear labels make quick access a breeze, saving time on projects. A reliable kit for all your needs.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This kit is for DIY fans. It is for makers. Use it for RC cars. Use it for 3D prints. It is good for fix-it jobs. It has nuts and bolts. It is for handy folks. These screws are strong. They are small. You will like this kit.
Ready to Purchase?
2. 600 Pcs M3 Screws Assortment Kit, M3x 6/8/10/12/16/20/25/30mm M3 Screw Kits 12.9 Alloy Steel Nuts and Bolts Assortment Kit Black Zinc Plated Hex Socket Head Screws Nuts Bolts and Washers Set
This screw kit is great. It has 600 pieces total. You get many sizes here.
The alloy steel is strong. Each piece has black zinc plating. This prevents rust and wear.
These nuts and bolts fit well. Use them for any job.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This set is perfect for DIY fans, repair pros, and anyone who wants strong, easy‑to‑use M3 screws ready for any job. It also fits people who like tools that are simple, organized, and built to last.
Ready to Purchase?
3. Fgruh 750PCS M3 Screws Assortment Kit, M3x6/8/10/12/16/20/25/30 mm Hex Socket Head Bolts, Nuts & Washers Assorted Set – 12.9 Alloy Steel Black Zinc Plated M3 Screw for 3D Printer,DIY
Get the Fgruh M3 Screws Assortment Kit. This set fits 3D printers well. It helps with DIY projects.
The bolts use strong alloy steel. They have a black zinc finish.
Use these durable M3 bolts now. The kit stays neat and clean. You will love the fast results.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This set is perfect for makers, 3D printer users, DIY fans, and anyone who needs strong M3 screws for clean, precise work.
Ready to Purchase?
4. VGBUY 600pcs M3 Screw Assortment Kit, M3 Screws (8 Sizes 6-30mm) for 3D Printer DIY, Hex Socket Head Cap Screws Bolts Nuts Washer Kit, 304 Stainless Steel, 6/8/10/12/16/20/25/30mm
Get the VGBUY 600pcs M3 Screw Assortment Kit. It has 8 sizes and 600 pieces. Perfect for all your DIY needs.
Made from 304 stainless steel, these screws resist rust and last long. They hold up under heavy use.
The kit comes in a strong box with compartments. Keep your screws neat and easy to find. The socket head design gives a firm grip and stops slipping.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This M3 Screw Assortment Kit is perfect for DIY enthusiasts, 3D printer users, and hobbyists working on small electronics, RC cars, or machinery repairs. It’s also great for anyone needing organized, high-quality screws for various projects.
Ready to Purchase?
5. 380 Pcs M3 Black Flat Head Machine Screws and Hex Nuts Kit Carbon Steel Countersunk Head Phillips Screws Bolts Assortment,M3 x 4mm/ 6mm/ 8mm/ 10mm/ 12mm/ 16mm/ 20mm
This 380‑piece M3 screw and nut kit is strong, smooth, and easy to use. The carbon steel build gives each piece long life. The flat head design sits clean and tight in any project.
You get many sizes for many tasks. Everything stays neat in the organized box.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This 380-piece M3 screw and nut kit is perfect for anyone who needs reliable fasteners for DIY projects, electronics, machinery, or automotive repairs. Whether you’re a hobbyist, professional, or homeowner, this kit offers durable, easy-to-use screws and nuts for all your fastening needs.
Ready to Purchase?
6. 500Pcs M3 Metric Screws Assortment Kit,hex Screws Socket Head Bolts,Nuts Washers Assorted Set,Hex Socket Head Cap Screws,12.9 Alloy Steel Black ScrewM3x6/8/10/12/16/20/25/30mm for 3D Printer,DIY
This 500-piece M3 screw kit is perfect for DIY projects. It includes hex screws, nuts, and washers in various sizes. Everything is made from high-quality 12.9 alloy steel.
The screws are durable and rust-proof. They come in 8 different lengths, from 6mm to 30mm. Each piece is easy to install and fits perfectly.
The kit is organized in a storage box. It’s great for home repairs, machinery, and hobbies. Perfect for professionals and DIY enthusiasts.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This 500-piece M3 screw kit is perfect for DIY enthusiasts, professionals, and hobbyists working on 3D printing, home repairs, or small projects. It’s ideal for anyone needing durable, high-quality screws for crafts, machinery, or everyday fixes.
Ready to Purchase?
7. 840 PCS M3 Screw Kit, M3 Hex Button Head Screws, Metric Machine Screw Assortment 8 Sizes 6MM to 30MM, 10.9 Grade Alloy Steel, Black Zinc Plated, with Hexagonal Wrench
This 840-piece M3 screw kit is a must-have for any DIY enthusiast or professional. It includes 200 screws, 200 nuts, 220 flat washers, and 220 lock washers, plus a hex wrench. The thickened plastic storage box keeps everything organized and easy to find.
The screws and nuts are made of high-quality 10.9-grade alloy steel, ensuring strength and durability. They feature black zinc plating for rust resistance and a smooth surface. The standardized metric sizes range from 6mm to 30mm, covering 8 commonly used sizes.
Perfect for home, electronics, and automotive projects. Great gift for DIY lovers. Long-lasting and versatile.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This M3 screw kit is perfect for anyone who loves DIY projects, repairs, or 3D printing. It’s great for home use, electronics, cars, and small fixes, making it ideal for both beginners and pros.
Ready to Purchase?
8. Kernmax 1120Pcs M3 Countersunk Screws Kit, M3 Flat Head Screws, Phillips Bolts Nuts Washers Set for 3D Printers, Electronics, Machinery & DIY Projects, Length 6MM-25MM, Zinc Plated
Complete screw kit. The Kernmax set has 1120 pieces of M3 countersunk screws in popular lengths from 6mm to 25mm. Perfect for 3D printers, electronics, and DIY projects.
These screws are made from high-grade carbon steel with a black zinc coating. This makes them rust-resistant and long-lasting.
Stay organized with the clear case. Each screw, nut, and washer fits neatly for easy access. Backed by 24-hour support, this kit is a reliable choice for all your fixing needs.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This M3 screw kit is perfect for anyone who needs reliable fasteners for DIY projects, electronics, 3D printing, or machinery repairs. With its organized storage and rust-resistant design, it’s ideal for both beginners and professionals.
Ready to Purchase?
9. Kadrick M3 Screws Assortment Kit, 2240 Pcs – Hex Socket Button & Cap Head Metric M3 Bolts, 4-35mm Length with Nuts, Washers & Hex Key, 10.9/12.9 Grade Alloy Steel Screws for 3D Printer, DIY, RC Car
The Kadrick M3 Screws Assortment Kit gives you 2,240 pieces of strong metric M3 hardware. It includes button head and socket cap screws in many sizes.
It uses 10.9 and 12.9 grade alloy steel with a black zinc finish. The set comes with nuts, washers, and a hex key in a labeled case.
It is made for 3D printers, DIY jobs, and RC cars. You also get 24-month support. It is easy to store and easy to use.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This kit is perfect for makers, repair fans, and 3D printer users who need strong M3 screws in many sizes. It is also great for RC car and DIY work, with nuts, washers, and a hex key in one neat case.
Ready to Purchase?
10. uxcell M3 x 6mm 304 Stainless Steel Cross Head Phillips Pan Head Screws Bolt 60pcs
Secure your projects with the uxcell M3 x 6mm screws. These 304 stainless steel bolts are durable and rust-resistant. Each pack includes 60 pieces for all your needs.
The Phillips pan head design makes installation easy. Thread size is M3 x 6mm, perfect for small tasks. Silver tone adds a clean, professional look.
Ideal for DIY and repairs, these screws are reliable and strong. Their compact size fits tight spaces. Get your projects done with confidence and ease.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This is perfect for DIY fans, repair work, and small builds. It is a smart pick for anyone who needs strong, clean, and easy-to-use screws.
Ready to Purchase?
Buying Guide
M3 screws are small but mighty, perfect for DIY projects, 3D printing, and electronics. Choosing the right kit saves time and effort.
Factors to Consider When Buying M3 Screws:
– Material: Stainless steel resists rust, while alloy steel offers strength. Pick based on your project’s needs.
– Size Variety: Kits with multiple lengths (like 6mm to 30mm) are versatile for different tasks.
– Coating: Black zinc plating adds durability and rust resistance, ideal for long-term use.
– Inclusions: Look for kits with nuts, washers, and tools for a complete solution.
– Storage: A labeled, organized box keeps screws tidy and easy to find.
– Grade: Higher grades (like 12.9) mean stronger screws for heavy-duty projects.
– Quantity: Choose a kit with enough pieces to avoid running out mid-project.
– Head Type: Hex socket, button head, or flat head screws fit different tools and needs.
– Brand Reliability: Trusted brands often offer better quality and support.
Find the perfect M3 screw kit to make your projects stronger and longer-lasting!