UHB, underhead thread wood construction screw, cylinder head, 8.0 x 400, partial thread, TX 40, steel, galvanized, blue passivated, 50 pcs.Area of application:Fastening of wood components in pressure-resistant and non-pressure-resistant insulation systems in rafter-insulated roofs and facades on insulation systems.Area of application:Wood construction, rafter insulation, facade constructionNotes:Calculable safety with the REISSER dimensioning software.Advantages / Claim:The underhead thread wood construction screw