Official Journal of the Japan Wood Research Society
From: Prediction of withdrawal resistance for a screw in hybrid cross-laminated timber
Self-tapping screw | Ø6.5 × 65 mm | Ø8.0 × 100 mm |
---|---|---|
Tensile strength (MPa) | ≥ 600 | ≥ 600 |
Modulus of elasticity (MPa) | 210,000 | 210,000 |
Outer thread diameter (mm) | 6.50 | 8.00 |
Inner thread diameter (mm) | 3.25 | 5.30 |
Inner thread diameter ratios | 0.50 | 0.66 |
Length (mm) | 65.00 | 100.00 |
Tip length (mm) | 5.6 | 11.5 |
Head diameter (mm) | 10.00 | 13.00 |
Pitch (mm) | 2.80 | 3.60 |