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M1.4-M8 GB2672 Extra-Long 3-100mm Six-Lobe Torx Pan Round Head Screw Bolt 304 Stainless Steel
M1.4-M8 GB2672 Extra-Long 3-100mm Six-Lobe Torx Pan Round Head Screw Bolt 304 Stainless Steel
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M1.4–M8 GB2672 Six-Lobe Torx Pan Round Head Screw — 304 Stainless Steel, Extra-Long 3–100mm
GB2672 specification six-lobe Torx (T-drive) pan round head machine screws in 304 stainless steel, available in M1.4 through M8 metric thread sizes and 3mm to 100mm lengths. The six-lobe Torx drive provides superior torque transfer and anti-cam-out performance compared to Phillips and slotted drives, making these screws ideal for precision electronics assembly, robotics, and applications requiring high torque in a small head size. The pan round head provides a large bearing surface and a clean, finished appearance. 304 stainless steel provides excellent corrosion resistance.
Technical Specifications
| Parameter | Value |
|---|---|
| Standard | GB2672 (Chinese national standard, Torx pan head) |
| Material | 304 Stainless Steel (A2) |
| Drive Type | Six-lobe Torx (T-drive) |
| Head Type | Pan round head |
| Thread Sizes | M1.4, M1.6, M2, M2.5, M3, M4, M5, M6, M8 |
| Length Range | 3mm – 100mm |
| Thread | Metric coarse (ISO 68-1) |
| Tensile Strength | ~500 MPa (304 SS) |
| Certification | RoHS |
Torx Bit Size Reference
| Thread Size | Torx Bit Size |
|---|---|
| M1.4 – M1.6 | T3 / T4 |
| M2 | T6 |
| M2.5 | T8 |
| M3 | T10 |
| M4 | T20 |
| M5 | T25 |
| M6 | T30 |
| M8 | T40 |
Typical Applications
- Electronics Assembly: M1.4–M3 Torx pan head screws for laptop, tablet, and smartphone assembly and repair where anti-cam-out drive is required
- Robotics & Automation: M3–M5 Torx screws for robot frame, servo mounting, and sensor bracket assembly requiring high torque and anti-cam-out performance
- 3D Printer: M3–M5 Torx pan head screws for 3D printer frame assembly, extruder mounting, and linear rail fastening
- Automotive Interior: M4–M6 Torx screws for automotive interior trim panel, dashboard, and seat assembly
- Long-Reach Assembly: Extra-long variants (50–100mm) for through-bolt assembly of thick panels, stacked PCBs, and deep enclosure fastening
FAQ
Q: What is the advantage of Torx drive over Phillips?
A: Torx (six-lobe) drive transfers torque more efficiently than Phillips, with significantly less cam-out (bit slipping out of the screw head). This allows higher torque application without damaging the screw head or the bit, making Torx preferred for precision assembly and power tool use.
Q: Is GB2672 compatible with standard Torx bits?
A: Yes. GB2672 six-lobe Torx screws use the same Torx bit profile as ISO/DIN Torx screws. Standard T-series Torx bits (T3–T40) are compatible.
Package Contents
- M1.4–M8 GB2672 Torx pan head screws (size and quantity as selected)
