Product Specifications
| Model / Specification | 1.6-10 |
| Material | Carbon steel, Stainless steel |
| Thread size d | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | (4.5) | 5 | (5.5) | 6 | (7) | 8 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P | Pitch | 0.8 | 0.9 | 1 | 1.2 | 1.4 | 1.6 | 1.8 | 2 | 2.2 | 2.5 | 2.8 | 3 | 3.5 |
| ds | Min. | 1.46 | 1.86 | 2.25 | 2.75 | 3.2 | 3.7 | 4.2 | 4.7 | 5.2 | 5.7 | 6.64 | 7.64 | 9.64 |
| Max. | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 7 | 8 | 10 | |
| dk | Max. | 3.2 | 3.9 | 4.63 | 5.8 | 6.75 | 7.65 | 8.6 | 9.5 | 10.5 | 11.05 | 13.35 | 15.2 | 18.9 |
| Min. | 2.8 | 3.5 | 4.23 | 5.3 | 6.25 | 7.15 | 8 | 8.9 | 9.9 | 10.35 | 12.55 | 14.4 | 18.1 | |
| k | Max. | 1.4 | 1.6 | 1.98 | 2.37 | 2.65 | 2.95 | 3.25 | 3.5 | 3.95 | 4.34 | 4.86 | 5.5 | 6.8 |
| Min. | 1.2 | 1.4 | 1.78 | 2.07 | 2.35 | 2.65 | 2.95 | 3.2 | 3.65 | 3.94 | 4.46 | 5.1 | 6.4 | |
| n | Min. | 0.4 | 0.5 | 0.6 | 0.8 | 0.9 | 1 | 1.2 | 1.2 | 1.4 | 1.6 | 1.8 | 2 | 2.5 |
| Max. | 0.65 | 0.75 | 0.85 | 1.05 | 1.15 | 1.35 | 1.55 | 1.55 | 1.75 | 1.95 | 2.15 | 2.35 | 2.85 | |
| t | Max. | 0.96 | 1.1 | 1.3 | 1.54 | 1.74 | 1.98 | 2.2 | 2.5 | 2.7 | 2.8 | 3.06 | 3.66 | 4.32 |
| Min. | 0.64 | 0.7 | 0.9 | 1.06 | 1.26 | 1.38 | 1.6 | 1.9 | 2.1 | 2.2 | 2.34 | 2.94 | 3.6 | |
| r | ≈ | 0.2 | 0.2 | 0.2 | 0.2 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 |
| R | 1.6 | 2.3 | 2.6 | 3.4 | 4 | 4.8 | 5.2 | 6 | 6.5 | 6.8 | 8.2 | 9.7 | 12.1 | |
| r2 | 0.64 | 1.4 | 1.5 | 1.9 | 2.1 | 2.4 | 2.6 | 2.9 | 3.2 | 3.5 | 3.8 | 4.4 | 5.5 | |
| 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/T 99-1986 for selection reference only; actual supply is subject to drawings and inspection reports.
Product Overview
The slotted round head wood screw is manufactured to GB/T 99-1986. Its round (dome) head is driven by a single slotted recess, so an ordinary flat-blade screwdriver can be used. The thread is a wood-screw type with a coarse pitch and a sharp, tapered point: it cuts the wood fibres as it is driven in, so the timber is less likely to split. Together with the large bearing face of the round head, this makes the screw suitable for direct fastening of timber, furniture and soft materials.
1. Product Features
- Round (dome) head with a large bearing face, so the timber surface is not crushed when driving.
- Single slotted drive: an ordinary flat-blade screwdriver is all that is needed.
- Wood-screw thread with coarse pitch and sharp tapered point; drives smoothly into timber without splitting.
- Nominal diameters from 1.6 mm to 10 mm, a complete size range.
- Available in carbon steel and stainless steel to suit the service environment.
2. Product Advantages
- The self-tapping tapered thread needs no pilot hole, or only a small one, giving high installation efficiency for volume woodworking.
- The large round head spreads the clamping load and avoids crushing the timber, giving a firm joint.
- High degree of standardisation: the GB/T 99 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
- Wooden furniture, wooden packing cases and pallets.
- Building decoration, wooden doors and windows, and soft board fixing.
- Assembly of wooden or plastic parts in appliances, toys and handicrafts.
- Stainless steel versions suit damp or mildly corrosive environments such as outdoor woodwork and kitchen or bathroom fittings.
