0 Items View Cart

You have no items in your shopping cart.

Product was successfully added to your shopping cart.
GRK R4 Multi Purpose Screw

More Views

GRK R4 Multi Purpose Screw

GRK R4 Multi Purpose Screws

The R4 Multi Purpose Screws' design further enhances the R4’s versatility by allowing the fastener to be installed without countersinking into even the hardest woods. The screw head closes the hole off with precision, leaving no damaged fibers around the head. Repackaged under license from GRK.

Available in Diameters #6 thru #12 and lengths from 1-14" thru 12", in Bulk Cartons, ProPaks, and HandyPaks. Several #9 & #10 sizes also available in Contractor Packs.

View more product details

* Required Fields


Questions? Visit our resource center or ask an expert

Free Shipping Available

On any combination of select items over $99

Excluding Alaska and Hawaii. Conditions Apply

  • Minimum Order Tier: $99
  • Note: Free shipping only applies to combined product totals of the same Minimum Order Tier. Learn More

GRK’s R4 self-countersinking screw has a new under head with saw-blade like cutting teeth and six self-contained cutting pockets. Together these features act like 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. 

The R4 9 x 2-1/2" and 9 x 3-1/8" are the most commonly used for decks and are VALUE priced by us for that reason.

R4 Screw #4 requires a T-10 bit.

R4 Screws #6 & #8 requires a T-15 bit.

R4 Screws #9,#10 & #12/14 requires a T-25 bit.


Decimal Shank Diameter*

Nearest Fractional Measurement



















*Shank diameter is measured on the smooth portion of the screw above the threads.

Get all the facts by following the link in the Additional Info Tab to the manufacturer's page for this item

Package Quantity Various sizes of the GRK R4 Multi-Purpose Framing Screw are available.
Manufacturer GRK
Manufacturer Link http://www.grkfasteners.com/products/r4/r4

GRK Fasteners

GRK Fasteners offers top quality tools and bits for use with their screws and fasteners.

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.

  1. Be the first to review this product

Write a Review

  1 star 2 stars 3 stars 4 stars 5 stars
Overall Product Rating

Also Purchased