chipboard screw
Head Styles:
1) Flat/Countersunk
2) Oval/Countersunk Raised
3) Pan
Drive Styles:
1) Pozi
2) Torx
3) Philips
zinc plated waxed,ribbs
2.5 x 10- 6.0 X 160
dry wall screw:phillips bugle head phosphate or zinc,flat head 3.5 X 16- 4.8 X 130
wood screw:double countersunk pozi twinthread zinc 4 x 1/2- 12 x 4