RSS Blister-Pak


RSS Blister-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)
000077269113221 772691 13221 5 5/16X3"1/8 1card=1bit+15screws 0.56
000077269113225 772691 13225 3 5/16X4" 1card=1bit+12screws 0.54
000077269113231 772691 13231 4 5/16X5"1/8 1card=1bit+10screws 0.55
000077269113235 772691 13235 2 5/16X6" 1card=1bit+10screws 0.54
000077269113287 772691 13287 1 3/8X8" 1card=1bit+3screws 0.31
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