10pcs DIN912 Hex Socket Cap Head Bolts M3–M8 Stainless Steel
10pcs DIN912 Hex Socket Cap Head Bolts M3–M8 Stainless Steel
Details
10-Pack DIN912 Hex Socket Cap Head Bolts — M3, M4, M5, M6 & M8
Get a reliable pack of 10 Allen hex socket cap head screws in your choice of size and length. Whether you're building furniture, assembling machinery, or tackling a precision DIY project, these bolts deliver the strength and corrosion resistance you need. Available in 304 A2 stainless steel or Grade 12.9 black alloy steel, and conforming to the DIN912 standard, these fasteners are a workshop essential.
Made in Mainland China.
Key Features
- Material options: 304 A2 stainless steel (excellent corrosion resistance) or Grade 12.9 black steel (high tensile strength)
- DIN912 standard hex socket cap head design for secure, flush fastening
- Available sizes: M3, M4, M5, M6, M8
- Thread lengths: 4mm up to 150mm — select the exact length you need
- Drive style: Hex (Allen key) socket head for precise torque application
- Mostly full thread; some lengthened Grade 12.9 bolts are half-threaded
- CE certified; no high-concern chemicals
- Pack of 10 pieces per order
Technical Specifications
| Size | Thread Diameter | Thread Pitch |
|---|---|---|
| M3 | 3 mm | 0.5 mm |
| M4 | 4 mm | 0.7 mm |
| M5 | 5 mm | 0.8 mm |
| M6 | 6 mm | 1.0 mm |
| M8 | 8 mm | 1.25 mm |
What's in the Box
- 10 × DIN912 Hex Socket Cap Head Bolt/Screw (size & length as selected)
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Frequently Asked Questions
Q: What is the difference between the 304 stainless steel and Grade 12.9 black steel versions?
A: The 304 A2 stainless steel bolts offer excellent corrosion resistance and are ideal for outdoor, marine, or humid environments. The Grade 12.9 black alloy steel bolts provide superior tensile strength and are better suited for high-stress mechanical applications where maximum holding power is required.
Q: Are these hex socket cap head bolts full thread or partial thread?
A: Most bolts in this range are full thread. However, some of the longer (lengthened) Grade 12.9 steel bolts are half-threaded. Please check the product variant details when selecting your preferred length.
Q: What Allen key (hex wrench) size do I need to drive these bolts?
A: The required hex key size depends on the bolt diameter: M3 uses a 2.5mm hex key, M4 uses 3mm, M5 uses 4mm, M6 uses 5mm, and M8 uses 6mm — all standard metric Allen key sizes widely available in most tool sets.
Q: Are these DIN912 hex socket screws suitable for use with aluminium, wood, and metal?
A: Yes. DIN912 cap head bolts are machine screws designed primarily for metal-to-metal fastening with a threaded hole or nut. They can also be used with appropriately sized threaded inserts in wood or composite materials. They are not self-tapping and require a pre-tapped hole or matching nut.
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.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.