2x TIMCO Metal Construction Timber to Heavy Section Screws Countersunk Exterior Silver Organic BMHW85 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. 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) = 30mm - 49mmPackaged Height = 90mmHead = Countersunk with RibsPackaged Width = 90mmThread Diameter (metric) = 5.5mmPackaged Weight = 1.2kgLength (metric) = 85mmMax Drilling Thickness (metric) = 12mmType of Recess = PhillipsHeight = 5.5mmPackaged Length = 135mmEffective Thread Length (metric) = 45 *P/TLength = 85mmMaterial = Bi-Metal/A2-304 Stainless Steel/Carbon SteelType of Point = Self-Drilling No.5Width = 5.5mmPTDTIMBMHW85

General description These TIMCO Self-Drilling Wing-Tip Steel to Timber Heavy Section A2 Stainless Steel Bi-Metal Screws are specifically designed for attaching wood to metal, with a maximum thickness of 12mm. The innovative wing design allows for efficient reaming of timber, enabling the screw to achieve maximum revolutions per minute (R.P.M.) without overheating. Once the wings contact the metal, they break off, allowing the screw to self-tap effectively. Technical specifications Dimensions: 5.5 x 85 mm Material: A2 Stainless Steel Type: Bi-Metal Thread: Metric Maximum wood thickness: 12 mm