Drywall Screws

DRYWALL SCREWS

CE

Material: Steel – C1022A , Hardened by heat treatment; 

Surface hardness: 550-800 HV
Surface: Grey phosphateCore hardness: 240-450 HV

Dimension of Bugle Head Drywall Screws, Coarse Thread as below:

 

Size  (mm) A  Head diameter (mm) F  Head height (mm) D  Outer diameter (mm) d  Inner diameter (mm) P  Thread distance (mm) Q  Recess  deepness (mm) M  Recess width      (mm) Recess R  Head radius (mm)
3.5 7.90-8.50 4.50-7.00 3.50-3.90 2.05-2.35 2.70-2.82 2.60-2.93 4.50-5.10 Ph2 4.50-5.00
4.2 7.90-8.50 4.50-7.00 4.20-4.60 2.55-2.85 2.90-3.18 2.60-2.93 4.50-5.10 Ph2 4.50-5.00

 

Dimension of Bugle Head Drywall Screws, Fine Thread as below:

 

 

 

Size (mm) Head diameter (mm) F  Head height (mm) D  Outer diameter (mm) d  Inner diameter (mm) P  Thread distance ±10% (mm) Q  Recess  deepness (mm) M  Recess width    (mm) Recess R  Head radius (mm)
3.5 7.90-8.50 4.50-7.00 3.50-3.90 2.05-2.35 1.41 2.60-3.10 4.50-5.10 Ph2 4.50-5.00
4.2 7.90-8.50 4.50-7.00 4.20-4.60 2.55-2.85 1.69 2.60-3.10 4.50-5.10 Ph2 4.50-5.00