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.
Id | 202266 |
SKU | 7212400 |
PartNo | 01101 |
UPC | 737743205088 |
Thread Size | #9 |
Length | 2-1/2 In |
Thread Type | W-Cut |
Head Type | Round |
Drive Type | Star |
Material | Steel |
Package Quantity | 575 PK |
Thread Length | 1.57 In |
Drive Size | T25 |
Applicable Materials | Cement Fiber Board, Melamine, Particle Board, Plastic, Sheet Metal, Wood |
CID | 9 |