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Catalog  : Deck and Structural Screws : GRK Fasteners ÜberGradetm
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GRK Screw Selection Guide

CLIMATEKTM coated screws have been independently tested and approved for use in treated wood products. Our fasteners come with a Limited Lifetime Warranty. For best performance use PHEINOXTM stainless steel screws by GRK.

Always build your project according to current ICC (International Code Council) specifications. GRK's ClimatekTM coating meets and exceeds all standards, including AC257, for various types of wood. Please view ICC Report # ESR-2442 and ICC Report # ESR-3201.

No pre-drilling for most GRK products, except where building material limitations require. Always place deck boards with outer edge of growth rings facing up (bark side up). Do not use deck cleaners which contain bleach with coated metals. Consult wood supplier's/manufacturer's recommendations. Decking screws should be countersunk 1/8".

GRK recommends the use of its PHEINOXTM stainless steel fasteners in tropical wood, cedar wood, pool, sauna and sea-side applications, as well as deck applications in areas with large daily temperature variances.

R4TM Multi Purpose Screw: Multi-use screw for wood, particle board, plastic, Sheet metal, cement fiber board and wood decking. Comes in 59 sizes: 4 x 3/8” to 12 x 12". The R4TM is self-tapping with a countersinking head, patented head & thread, no pre-drilling, no stripped heads and exclusive CEE thread.

RSSTM Structural Screw: Ideal for ledger boards and more. Available in 41 sizes from 1”1/2 to 20". The RSSTM has sharp threads & points, built-in washer, CEE thread, W-CutTM and ICC Report ESR-2442.

RSSTM JTS Joist &Truss Fastener: Used for joists and trusses.

RSSTM LPS Panel Fastener: For Structural Insulated Panel Systems.

RSSTM LTF Timber Frame Fastener: Designed specifically for the Log Home &Timber frame market.

TRIMTM Head Screws: Comes in 11 sizes ranging from 1"1/4 to 5" in length with the smallest screw head available. These screws are for all trim applications, no pre-drilling, have strong heads & starhead recess.

FIN/TrimTM: Finish carpentry screw.

RT CompositeTM: Use in classic composite decking.
TM  Head Screws are also available in White for synthetic trim boards.

KameleonTM CompositeScrew: Use in plastic or composite decking. The KameleonTM comes in six colors: Grey, Sage, Sand, Tan, Brown and Redwood. Available in 4 lengths: 1”3/4, 2"1/2, 2"3/4 and 3"1/8. The KameleonTM  has fiber trapping rings, CEE thread, is self-tapping and ClimatekTM  coated.

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