More about RSS LTF Screws...
Star drive #30 applies approximately 650 lbs torque energy
Patented washer type head
Produces extreme pressure pulling the log down, eliminating the need to add a washer as required for common lag screws. Head can be countersunk 1"-3" without pre-drilling a countersink hole.
reinforced shoulder
Case hardened steel
Climatek™ coating, ACQ Approved.
Lifetime limited warranty.
"CEE" thread
Exclusive "CEE" thread slightly enlarges hole for screw shank and allows log to settle without restriction.
Eliminates pre-drilling as required for the common lag screw.
Complete and effective installation in one operation
4" thread
Very sharp deep rolled threads, provide extreme pulling and withdrawal power.
patented W-Cut™
Slices groove for next thread, reducing tension and pressure on fastener, providing ease of installation
ZipTip™
For quick and easy starting.
RSS™ Structural Screw Test Data
GRK Fasteners utilizes strict quality control procedures. Every batch of screws produced is independently random sampled and quality controlled to the highest standards.
Accreditations for independent test laboratories include:
ICC, CNLA, TÜV, Ü, ISO, DAR.
Tests conducted in Douglas Fir specific gravity 0.5.
