Product Specifications
| Model / Specification | 6-20 |
| Material | Carbon steel, Stainless steel |
| Thread size d | 6 | 8 | 10 | 12 | 16 | 20 | |
|---|---|---|---|---|---|---|---|
| P | Pitch | 2.5 | 3 | 3.5 | 4 | 5 | 6 |
| ds | Min. | 5.7 | 7.64 | 9.64 | 11.57 | 15.57 | 19.48 |
| Max. | 6 | 8 | 10 | 12 | 16 | 20 | |
| c | Max. | 0.5 | 0.6 | 0.6 | 0.6 | 0.8 | 0.8 |
| e | Min. | 10.89 | 14.2 | 17.59 | 19.85 | 26.17 | 32.95 |
| k | Nominal | 4 | 5.3 | 6.4 | 7.5 | 10 | 12.5 |
| Max. | 4.38 | 5.68 | 6.85 | 7.95 | 10.75 | 13.4 | |
| Min. | 3.62 | 4.92 | 5.95 | 7.05 | 9.25 | 11.6 | |
| s | Max. | 10 | 13 | 16 | 18 | 24 | 30 |
| Min. | 9.64 | 12.57 | 15.57 | 17.57 | 23.16 | 29.16 | |
| da | Max. | 7.2 | 10.2 | 12.2 | 14.7 | 18.7 | 24.4 |
| dw | Min. | 8.7 | 11.4 | 14.4 | 16.4 | 22 | 27.7 |
| r | Min. | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.8 |
| Weight ≈ kg / 1000 pcs | - | - | - | - | - | - | |
| Thread length b | - | - | - | - | - | - | |
Dimensions in mm. The bracketed sizes ((4.5), (5.5), (7)) are non-preferred. Data compiled from GB 102-1986 for selection reference only; actual supply is subject to drawings and inspection reports.
Product Overview
The hexagon head wood screw is manufactured to GB 102-1986. Its hexagonal head can be driven with a wrench or socket, so torque transmission is far better than with a slotted or cross recess. This makes it suitable for larger diameters and timber connections that need high tightening torque. The thread is a wood-screw type with a coarse pitch and a sharp tapered point that cuts the wood fibres as it is driven in, so the timber is less likely to split.
1. Product Features
- Hexagon head: can be driven with a wrench, socket or power tool, giving strong torque transmission.
- Suits large diameters (M6 to M20) and high tightening torques.
- Wood-screw thread with coarse pitch and sharp tapered point; drives smoothly into timber without splitting.
- Head width across flats is controlled to the standard to match standard wrenches and sockets.
- Available in carbon steel and stainless steel to suit the service environment.
2. Product Advantages
- The hexagon head allows mechanised, high-volume assembly, clearly faster than slotted wood screws.
- Resists cam-out and head damage under high torque, making it suitable for hardwoods and high-strength joints.
- High degree of standardisation: the GB 102 dimensional system is complete, which simplifies export matching and second sourcing.
- Material and surface finish can be customised to balance strength, corrosion resistance and cost.
3. Application Scope
- Timber building structures, timber houses and boardwalks with load-bearing timber members.
- Assembly of wooden packing cases, pallets and large wooden crates.
- Outdoor timber installations such as fences, pergolas and wooden decks.
- Stainless steel versions suit damp or mildly corrosive environments such as outdoor woodwork and coastal areas.
