How to Install Wood Floors with Tongue & Groove (Hidden) Screws - YouTube
Tongue-Tite® Screws
Tongue-Tite Screw 3.5 x 45mm (Box of 200) for Tongue & Groove Floorboards | Chiltern Timber
3.5 x 32mm Stainless Steel Tongue-Tite Screws - Box 200
3.5 x 49 Tongue-Tite Plus Screw 305 Stainless Steel C/W Bit - Harclo B2B
Trade-Fixings Direct - The only Togue & Groove flooring screw you will ever need. http://www.trade-fixingsdirect.co.uk/acatalog/Tongue-Tite-Screws.html | Facebook
Tongue-Tite Screws, 3.5 x 45mm, 200 per box | JFJ Wood Flooring