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GRK’s R4 Self Countersinking screw has 6 self-contained cutting pockets which act like a router and transport the drill dust away from the edge of the screw hole. They also widen the countersink hole only around the head shape. The screw head top closes the hole exactly, leaving no damaged fibers around the wider area of the head.
|Assembled Depth (in.)||0.19 in||Assembled Height (in.)||3.125 in|
|Assembled Width (in.)||0.19 in||Screw Length||3-1/8 in|
|Driver bit included||Yes||Fastener Callout Size||#10 x 3-1/8|
|Fastener Plating||Polymer||Fastener Thread Type||W-Cut|
|Fastener Type||Specialty Fastener||Fastener/Connector Material||Steel|
|Finish||Climatek coating||Finish Family||Metallic|
|Measurement Standard||SAE||Package Quantity||70|
|Primary Use||Wood, particle-board, and cement fiberboard applications||Product Weight (lb.)||0.016 lb|
|Self drilling||Yes||Self tapping||Yes|
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