ISO 7380-3 Torx Button Head Screw
ISO 7380-3 Torx Button Head Screws are characterized by a rounded head profile, a six-lobe drive, and a flange beneath the head. The integrated flange provides a wider bearing surface, helping distribute the clamping load over a larger area. The Torx drive allows for effective power transfer during tightening, making these screws a practical choice for assemblies requiring a compact head design and dependable fastening performance.
We manufacture Torx button head screws using cold heading, thread rolling, and other precision processing techniques. Our production processes are designed to maintain dimensional accuracy, consistent thread quality, and uniform head geometry across different sizes. Material selection and inspection procedures can be tailored to the requirements of individual orders.
Specification:
| Item | Specification |
|---|---|
| Standard | ISO 7380-3 |
| Product Type | Torx Button Head Screw |
| Size Range | M3-M12 |
| Steel Property Class | Class8.8,10.9 |
| Stainless Steel Property Class | A2-70,A2-80,A4-70,A4-80 |
| Thread | Metric Coarse/Metric Fine |
| Thread Standard | ISO 68-1,ISO 965 |
| Surface Treatment | Black Oxidation,Zinc Plated,Bright Finish,Passivation |
| Inspection | Dimensions, Thread,Mechanical Property,Coating |
Dimension Chart of ISO 7380-3 Torx Button Head Screw:
| Thread Diameter | M3 | M4 | M5 | M6 | M8 | M10 | M12 |
| Thread Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 |
| da(max) | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 |
| dk(max) | 5.7 | 7.6 | 9.5 | 10.5 | 14 | 17.5 | 21 |
| dk(min) | 5.4 | 7.24 | 9.14 | 10.07 | 13.57 | 17.07 | 20.48 |
| d1 | 3.5 | 4.9 | 5.6 | 7 | 9.9 | 11.2 | 14.2 |
| ds(max) | 3 | 4 | 5 | 6 | 8 | 10 | 12 |
| ds(min) | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 |
| dw(min) | 4.97 | 6.66 | 8.41 | 9.26 | 12.48 | 15.7 | 18.84 |
| k(max) | 1.8 | 2.45 | 3 | 3.3 | 4.5 | 5.5 | 6.6 |
| k(min) | 1.6 | 2.25 | 2.7 | 3 | 4.2 | 5.2 | 6.24 |
| r3(max) | 3.5 | 4.6 | 5.6 | 6.2 | 7.6 | 10.1 | 11.8 |
| r3(min) | 2.5 | 3.4 | 4.4 | 5 | 6.2 | 8.5 | 10 |
| r1 (min) | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 |
| r2 (min) | 0.3 | 0.4 | 0.45 | 0.5 | 0.7 | 0.7 | 1.1 |
| Torx No. | 10 | 20 | 25 | 30 | 45 | 50 | 55 |
| A | 2.8 | 3.95 | 4.5 | 5.6 | 7.93 | 8.95 | 11.35 |
| t(max) | 0.93 | 1.53 | 1.61 | 1.78 | 2.54 | 3.05 | 3.8 |
| t(min) | 0.8 | 1.24 | 1.32 | 1.48 | 2.15 | 2.65 | 3.35 |
| Tensile load - Class 8.8 | 3220 | 5620 | 9120 | 12900 | 23400 | 37100 | 54000 |
| Tensile load - Class 10.9 | 4190 | 7300 | 11800 | 16800 | 30500 | 48300 | 70200 |
| Tensile load - 70 | 2820 | 4820 | 7940 | 11300 | 20600 | 32500 | 47200 |
| Tensile load - 80 | 3220 | 5620 | 9120 | 12900 | 23400 | 37100 | 54000 |
Mechanical Property:
ISO 898-1 – Carbon and Alloy Steel Torx Button Head Screws
ISO 7380-3 Torx Button Head Screws made from carbon steel or alloy steel can be supplied in applicable property classes according to ISO 898-1. Mechanical requirements include tensile strength, proof load, and hardness, depending on the specified property class.
ISO 3506-1 – Stainless Steel Torx Button Head Screws
For stainless steel applications, ISO 7380-3 Torx Button Head Screws can be manufactured using corrosion-resistant stainless steel grades in accordance with applicable ISO 3506-1 requirements. Mechanical properties depend on the material grade and property class, such as A2-70 and A4-70.