Silva Timber is the exclusive distributor for GRK Fasteners™, manufacturer of 'The Industry's Toughest Screws'. All of GRK's products are built to last and have unique labour saving features.
60% off Climatek screws.
Self-countersinking into even the hardest woods.
Cutting pockets under the head transport drill dust away while cutting a perfectly clean screw hole.
Screw head closes the hole off with precision, leaving no damaged fibres around the head.
CEE thread (on 50mm and longer R4™ screws) enlarges the screw hole, increases the screw's drawing strength, reduces the friction on the screw shank and lowers the driving torque.
GRK Screws are packed with unique features, saving you time and money:
GRK Screws won't fail where others do, driving in effortlessly and significantly reducing the installation time.
Climatek™ is exclusive to GRK products. Originally designed for the Navy, GRK has adapted this coating for fasteners and rigorously tests it to meet and exceed all standards. GRK's Climatek™ coating is virtually indistinguishable from brass and its colour matches almost all wood finishes.
GRK Fasteners revolutionary Climatek™ coating is available only on GRK products.
GRK's Climatek™ coating consists of a total of six layers of various materials, including three layers of zinc-polymer.
Climatek™ has been tested for salt spray resistance, and more importantly, for Kesternich durability. Kesternich cycles are a more advanced way of testing a coated material. Each Kesternich cycle simulates heat, cold, wind, water, salt as well as a variety of other elements, whereas salt spray merely uses saltwater for its tests.
Climatek™ passed 29 Kesternich cycles, making it the most advanced coating of its kind.
PHEINOX™ stainless steel products are hardened and come with a limited lifetime guarantee against staining and rusting.
Star Drive Bits
The R4™ Climatek multi-purpose screw takes the following bit sizes:
One star drive bit is supplied free of charge with each 1000 (or part thereof) screws ordered.
Woodcare, fasteners, and accessories are all dispatched using our courier service and are available in a choice of express (2-3 days) or next working day delivery. Next working day delivery is available for UK mainland customers ordering before 11am.
Delivery charges vary based on the products you have ordered, the location of your delivery, the value of your order and the delivery service you require.
Free delivery is offered on orders over £150 + VAT to UK mainland postcodes only.