100pcs M3 Hex Socket Cap Screws & Nuts Kit | 6–25mm DIY Set
100pcs M3 Hex Socket Cap Screws & Nuts Kit | 6–25mm DIY Set
100pcs M3 High Carbon Steel Hex Socket Screws & Nuts Assortment Kit
Whether you're building a 3D printer, tackling a woodworking project, or assembling DIY electronics, this M3 Hex Socket Cap Screw Kit gives you everything you need in one convenient package. With 100 pieces spanning sizes from 6mm to 25mm, you'll always have the right fastener on hand for any task.
Key Features
- High Carbon Steel Construction: Delivers superior strength and durability compared to standard steel fasteners — built to handle the demands of precision assembly and heavy-duty DIY work.
- Hex Socket Drive Style: Compatible with standard Allen/hex keys for a secure, cam-out-resistant grip, making tightening and loosening fast and easy.
- Versatile Size Range (M3 × 6mm–25mm): Multiple lengths included to cover a wide variety of applications — from compact 3D printer frames to larger structural assemblies.
- Includes Matching Nuts: Everything you need for a complete, secure fastening solution — no need to source nuts separately.
- Ideal for 3D Printers & DIY Projects: Perfectly sized for popular 3D printer builds, RC models, electronics enclosures, woodworking jigs, and general maker projects.
- Convenient Assortment Kit: 100 pieces organized for easy access, saving you time sorting through loose hardware.
Specifications
| Material | High Carbon Steel |
| Thread Size | M3 |
| Length Range | 6mm – 25mm |
| Drive Style | Hex Socket (Allen Key) |
| Head Style | Socket Cap |
| Screw Type | Machine Screws |
| Package Quantity | 100 pcs (screws + nuts) |
| Country of Origin | Made in China (Mainland) |
What's in the Box?
- 100× M3 High Carbon Steel Hex Socket Cap Screws (assorted lengths: 6mm–25mm)
- Matching M3 Hex Nuts
Perfect For
- 3D printer frame assembly (Ender, Prusa, Voron, and more)
- RC cars, drones, and model kits
- Electronics enclosures and PCB mounting
- Woodworking jigs and fixtures
- General DIY, maker, and hobbyist projects
Note: Colors may slightly vary due to monitor settings. Please allow a small measurement deviation. Images are for reference only; actual product is as described.
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Frequently Asked Questions
Q: What sizes are included in the M3 hex socket screw kit?
A: The kit includes M3 machine screws ranging from 6mm to 25mm in length, providing a versatile assortment that covers the most common fastening needs in 3D printing and DIY assembly. Matching M3 hex nuts are also included.
Q: Are these screws compatible with standard Allen/hex keys?
A: Yes! All screws feature a hex socket (Allen key) drive, compatible with standard 2.5mm hex/Allen keys commonly used in 3D printer maintenance kits and general tool sets.
Q: What material are these screws made from, and are they durable enough for 3D printer frames?
A: These screws are crafted from high carbon steel, which offers excellent tensile strength and durability — more than sufficient for 3D printer frame assembly, electronics enclosures, and heavy-duty DIY applications.
Q: Can these screws be used for woodworking projects?
A: Absolutely. While the M3 hex socket cap screws are machine screws best suited for metal-to-metal or hardware fastening, they are widely used in woodworking jigs, fixture building, and any application where precise, strong fastening is required.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.