TIMCO Metal Construction Timber to Heavy Section Screws Countersunk Exterior Silver Organic BMHW120 Pack of 100

Specifically Designed To Attach Wood To Metal (Max. 12Mm). Metric Thread With Wings Designed To Ream Out The Timber So The Screw Can Achieve Max. R.p.m. Without Burning Out. When The Wings Hit The Metal They Will Break Off To Permit The Thread To Self-Tap Into The Metal. Note: Partially Threaded.Hardened Carbon Steel Drill Tip Fused On To An A2-304 Austenitic Stainless Steel BodySee `More Information` below for sizing and Colour detailsSpecificationTo Suit Timber (metric) = 50mm - 84mmPackaged Height = 90mmHead = Countersunk with RibsThread Diameter (metric) = 5.5mmPackaged Weight = 1.675kgLength (metric) = 120mmEffective Thread Length (metric) = 45 *P/TPackaged Width = 90mmMax Drilling Thickness (metric) = 12mmLength = 120mmHeight = 5.5mmPackaged Length = 135mmType of Recess = PhillipsMaterial = Bi-Metal/A2-304 Stainless Steel/Carbon SteelType of Point = Self-Drilling No.5Width = 5.5mmPTDTIMBMHW120

General description Specifically designed to attach wood to metal, these TIMCO Self-Drilling Wing-Tip Steel to Timber Heavy Section A2 Stainless Steel Bi-Metal Screws are ideal for applications where maximum efficiency is required. Technical specifications Dimensions: 5.5 x 120 mm Material: A2 Stainless Steel Thread type: Metric thread Maximum thickness of metal: 12 mm Usage Wings designed to ream out the timber, allowing the screw to achieve maximum R.P.M. without burning out. When the wings hit the metal, they break off to permit the thread to self-tap.