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GRK FASTENERS

GRK Fasteners R4 121010 Screw, #9 Thread, 2-1/2 in L, Bugle Head, Star Drive, Self-Drilling, Self-Tapping Point, Steel

Category Screws
R49212XLB
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GRK FASTENERS

GRK Fasteners R4 121010 Screw, #9 Thread, 2-1/2 in L, Bugle Head, Star Drive, Self-Drilling, Self-Tapping Point, Steel

Item Code: R49212XLB
Category Screws
Manufacturer GRK FASTENERS

Description

GRK's R4 self-countersinking screw has a patented under head 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 an ideally 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 head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4 screws 3-1/8 in and longer have a four-threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.

Specifications

Weight

9.8lb

Height

9in

Width

10.5in

Length

10.5in

Brand

GRK FASTENERS

Category

Screws

Manufacturer

GRK FASTENERS

Description

GRK's R4 self-countersinking screw has a patented under head 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 an ideally 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 head of the screw closes the hole off with precision, leaving no damaged fibers around the head. R4 screws 3-1/8 in and longer have a four-threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.

Specifications

Weight

9.8lb

Height

9in

Width

10.5in

Length

10.5in

Brand

GRK FASTENERS

Category

Screws

Manufacturer

GRK FASTENERS

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