Truss Head Screw
A type of mechanical fastener featuring a low, wide, dome-shaped head with a flat bearing surface, designed to distribute clamping force over a larger area—protecting the workpiece surface from damage.
Core Features
• Wide Force Distribution: Prevents indentation on soft/fragile materials (e.g., plastic, thin metal).
• Secure Fastening: Low-profile head reduces snagging risks in exposed applications.
Key Specs
• Materials: Common options include stainless steel (304/316), carbon steel, brass (for corrosion resistance).
• Drive Types: Compatible with Phillips, slotted, Torx, or hex drives; meets ANSI/ISO/DIN standards.
Typical Uses
Widely applied in electronics, furniture, automotive interiors, household appliances, and sheet metal assemblies.
| Thread specification | Thread diameter(d) | washer diameter(dc) | washer head diameter(dk) | washer head thickness(k) |
| M1.2 | 1.2 | 3 | 2.5 | 0.7 |
| M1.4 | 1.4 | 3.9 | 3.1 | 0.9 |
| M1.7 | 1.7 | 5 | 3.4 | 1.1 |
| M2 | 2 | 5.1 | 3.8 | 1.3 |
| M2.3 | 2.3 | 5.2 | 4 | 1.4 |
| M2.6 | 2.6 | 6.1 | 4.4 | 1.8 |
| M3 | 3 | 6.9 | 5.4 | 2.1 |
| M4 | 4 | 8.1 | 6.9 | 2.4 |