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Whether you're assembling furniture, maintaining machinery, or tackling outdoor builds, loose or rusted fasteners can derail your entire project. These 304 stainless steel hex socket button head screws are engineered for DIYers, hobbyists, and professionals who demand reliable, corrosion-resistant fastening in any environment.
Each pack contains 10 precision-machined screws available in M3, M4, and M5 thread diameters with lengths ranging from 6 mm to 20 mm (approximately 0.24″ to 0.79″). The smooth, low-profile button head and hex socket (Allen key) drive deliver a clean, flush finish without sacrificing torque or holding strength.
Ideal for electronics enclosures, automotive trim panels, marine hardware, and workshop equipment, these stainless steel button head bolts handle moisture, vibration, and temperature extremes that would corrode or strip ordinary zinc-plated fasteners.
Perfect for furniture assembly, shelving brackets, and home workshop projects where a flush, rust-free finish matters.
Use these button head bolts for interior trim panels, underbody covers, and engine bay accessories that need vibration resistance and a clean look.
Ideal for electronics enclosures, CNC machine guards, and precision equipment where exact thread sizing and corrosion resistance are non-negotiable.
304 stainless steel withstands salt spray and moisture, making these screws a reliable choice for boat fittings, outdoor furniture, and garden structures.
| Material | 304 Stainless Steel |
|---|---|
| Head Style | Button Head (Low Profile, Rounded) |
| Drive Style | Hex Socket (Allen Key / Internal Hex) |
| Thread Diameter | M3, M4, M5 |
| Available Lengths | 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm |
| Thread Type | Metric, Full Thread |
| Quantity per Pack | 10 pieces |
| Finish | Natural Stainless (Brushed) |
| Weight (per pack) | See variant options |
| Applicable Standards | ISO 7380 (Button Head Hex Socket Screw) |
| Recommended Tool | Hex Key / Allen Wrench (size varies by thread diameter) |
| Suitable Substrates | Metal, Wood, Plastic, Composite |
A button head screw has a wider, lower-profile dome-shaped head that sits closer to the surface, providing a cleaner aesthetic. A cap head (socket head cap screw) has a taller cylindrical head that allows higher torque. Button heads are preferred where appearance matters or clearance is limited.
Typically, M3 button head screws use a 2 mm hex key, M4 uses a 2.5 mm hex key, and M5 uses a 3 mm hex key. Always verify with the specific screw before applying full torque.
Yes. 304 stainless steel offers good corrosion resistance in most outdoor and mildly marine environments. For highly aggressive saltwater exposure, 316 stainless steel is generally recommended, but 304 performs well in most coastal and outdoor DIY applications.
Yes. These screws are compatible with aluminum, plastic, wood, and steel substrates. When threading into soft materials like plastic, apply moderate torque to avoid stripping the receiving thread.
Each pack contains 10 screws only. Nuts and washers are not included. If you need matching stainless steel nuts or washers, please check our other listings or contact us.
Standard metric coarse thread pitches are typically 0.5 mm for M3, 0.7 mm for M4, and 0.8 mm for M5. These screws follow standard ISO metric coarse thread specifications.
As a general rule, the engaged thread length should be at least 1.5× the screw diameter for metal-to-metal joints, and 2–3× for softer materials like wood or plastic. For example, an M4 screw threading into aluminum should engage at least 6 mm of thread.
