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Sauerland Spanplatte

Testing of Screw Withdrawal

  • measurements of screws and bores in mm
  • screw withdrawal given in kN
  • results given are the average of at least 10 tests

Preparation of the tests

  • skin : 3 mm particle board
  • 4mm of frame material trimmed off
  • boring according to the table

Screws

  • all measurements with particle board screws SPAX
  • thread reach according to the table

Spax-Screws Size ⇒
Bore ⇒
Thead reach ⇒
4,5 x 25
2,5 x 15
15
4,5 x 40
2,5 x 30
30
Extruded Solid board with additional glue

HVA 
HVB

650 kg/m3
700 kg/m3

0,81 kN
1,12 kN

2,18 kN
2,73 kN
Extruded Solid board

VV
VA
VB

600 kg/m3
650 kg/m3
700 kg/m3

0,56 kN
0,65 kN
0,84 kN

1,73 kN
2,15 kN
2,36 kN
Mat-produced Particle board




650 kg/m3


0,61 kN


1,46 kN
Spruce




400 kg/m3
430 kg/m3

0,68 kN
0,81 kN

2,15 kN
2,55 kN