Timco Black Drywall Screw Fine Thread 3.5 X 38Mm Phos - Box Of 200

TIMco

Manufactured to JISB1125 (1995) and independently tested to IFI specification ASTMC1002-89 with a 25 Super Sharp point and a 60 thread. Plated in either zinc or black phosphate to withstand 50 hours salt spray test. Fully threaded up to 50mm and partially threaded thereafter. Made from C10-18 Steel and surface hardened up to 750 HV to prevent torque shearing under load., Manufacturer: TIMCO