Keszoox
M1.6–M8 304 Stainless Steel ISO7380 Hex Socket Button Head Screws, Length 3–100mm
M1.6–M8 304 Stainless Steel ISO7380 Hex Socket Button Head Screws, Length 3–100mm
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M1.6–M8 304 Stainless Steel ISO7380 Hex Socket Button Head Screws — Length 3–100mm
ISO 7380 specification hex socket button head cap screws in 304 stainless steel (A2), available in M1.6 through M8 metric thread sizes and 3mm to 100mm lengths. The button head profile provides a low-profile, aesthetically clean fastening solution with a larger bearing surface than a standard socket head cap screw, reducing the risk of pull-through in thin materials. The hex socket (Allen key) drive provides high torque capacity in a compact head. 304 stainless steel (A2) provides excellent corrosion resistance for indoor, outdoor, and marine-adjacent applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Standard | ISO 7380 (hex socket button head) |
| Material | 304 Stainless Steel (A2) |
| Thread Sizes | M1.6, M2, M2.5, M3, M4, M5, M6, M8 |
| Length Range | 3mm – 100mm |
| Thread | Metric coarse (ISO 68-1) |
| Drive | Hex socket (Allen key / hex wrench) |
| Head Type | Button head (low-profile, large bearing surface) |
| Finish | Natural (passivated 304 SS) |
| Tensile Strength | ~500 MPa (304 SS) |
| Certification | RoHS |
Hex Key Size Reference
| Thread Size | Hex Key (Allen Key) | Head Diameter |
|---|---|---|
| M2 | 1.5mm | 3.8mm |
| M2.5 | 2mm | 4.7mm |
| M3 | 2mm | 5.7mm |
| M4 | 2.5mm | 7.6mm |
| M5 | 3mm | 9.5mm |
| M6 | 4mm | 10.5mm |
| M8 | 5mm | 14mm |
Typical Applications
- Electronics Enclosures: Low-profile button head screws for aluminium and plastic electronics enclosure assembly where a flush, clean appearance is required
- 3D Printer Assembly: M3 and M4 button head screws for 3D printer frame assembly, extruder mounting, and bed levelling hardware
- CNC Machine: M4–M8 button head screws for CNC router and mill frame assembly, spindle mounting, and linear rail fastening
- Robotics: M2–M5 button head screws for robot frame, servo mounting, and sensor bracket assembly
- Furniture & Fixtures: Decorative low-profile fastening for furniture, display fixtures, and architectural metalwork where screw head appearance matters
- Marine & Outdoor: 304 SS corrosion resistance for outdoor, coastal, and marine-adjacent fastening applications
FAQ
Q: What is the difference between ISO 7380 button head and ISO 4762 socket head cap screw?
A: ISO 7380 button head has a lower, wider head with a larger bearing surface — better for thin materials and aesthetic applications. ISO 4762 socket head cap screw has a taller, narrower head with higher torque capacity — better for high-strength structural fastening.
Q: Is 304 stainless steel suitable for outdoor use?
A: Yes. 304 SS (A2) provides excellent corrosion resistance in most outdoor environments. For coastal or marine environments with salt spray exposure, use 316 SS (A4) for superior chloride corrosion resistance.
Package Contents
- M1.6–M8 ISO7380 304 SS hex socket button head screws (size and quantity as selected)
