R4 Pro-Pak

By GRK

R4 Pro-Pak by GRK
Self-tapping, countersinking head, W-Cut thread design, CEE Thread, Zip-Tip™, and Climatek™ coated. For use in wood, particle-board, cement fiberboard, plastic, sheet metal, etc.

GRK's R4™ self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4™’s versatility by allowing the fastener to countersink into even the hardest woods. The screw head closes the hole off with precision, leaving no damaged fibers around the head.

  • Interior / Exterior Use
  • Self-tapping
  • Patented head & thread
  • No pre-drilling
  • No stripped heads
  • CEE Thread
  • Approved for structural & corrosion in ICC Report ESR-3201
Stock code Upc code Size Pieces Weight (lbs)
000077269101051 772691 01051 3 6X1"1/4 1pail=1590screws 4.62
000077269101055 772691 01055 1 6X1"1/2 1pail=1325screws 4.96
000077269101069 772691 01069 8 8X1"1/4 1pail=1300screws 5.15
000077269101073 772691 01073 5 8X1"1/2 1pail=1000screws 5.02
000077269101075 772691 01075 9 8X1"3/4 1pail=925screws 5.17
000077269101077 772691 01077 3 8X2" 1pail=850screws 5.24
000077269101079 772691 01079 7 8X2"1/2 1pail=650screws 4.78
000077269101081 772691 01081 0 8X2"3/4 1pail=615screws 5.2
000077269101091 772691 01091 9 9X1"1/4 1pail=1000screws 4.49
000077269101095 772691 01095 7 9X1"1/2 1pail=820screws 4.91
000077269101097 772691 01097 1 9X1"3/4 1pail=750screws 4.99
000077269101099 772691 01099 5 9X2" 1pail=690screws 5.35
000077269101101 772691 01101 5 9X2"1/2 1pail=575screws 5.19
000077269101103 772691 01103 9 9X2"3/4 1pail=480screws 4.82
000077269101105 772691 01105 3 9X3"1/8 1pail=425screws 4.91
000077269101131 772691 01131 2 10X2" 1pail=580screws 5.24
000077269101133 772691 01133 6 10X2"1/2 1pail=470screws 5.15
000077269101135 772691 01135 0 10X2"3/4 1pail=395screws 4.99
000077269101137 772691 01137 4 10X3"1/8 1pail=350screws 5.17
000077269101139 772691 01139 8 10X3"1/2 1pail=300screws 4.58
000077269101141 772691 01141 1 10X4" 1pail=270screws 4.93
000077269101143 772691 01143 5 10X4"3/4 1pail=230screws 4.99
000077269101163 772691 01163 3 12X3"1/2 1pail=200screws 4.44
000077269101165 772691 01165 7 12X4" 1pail=190screws 4.8
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