Product Info Catalog Hardware Fasteners Screws Timberlok Wood Screws, 4-In., 50-Pk. Timberlok Wood Screws, 4-In., 50-Pk. Request a Quote UPC: 608309400189 SKU: 593749 Model Number: FMTLOK04-50 Fastenmaster, 50 pack, 4" timberlok screw, no pre-drilling, timberlok drives right through pressure treated wood & reduces labor time with quick & safe 1 step installation, guaranteed corrosion resistant performance.