Dual Threaded Coach Screw Hex Head M8 x 70mm AISI 304
Superb double thread lag screw for Excellent Joints - Alibaba.com
Comparison of migration behavior between single and dual lag screw implants for intertrochanteric fracture fixation | Journal of Orthopaedic Surgery and Research | Full Text
Dual Threaded Coach Screw 8 x 70mm (M8 x 35mm) - 316 Grade Stainless Steel
M6 M8 Hanger Bolts Double Ended Thread Lag Screws Wood Screws Furniture Fixing Self Tapping Screws Color Zinc Plated (Color : 20pcs, Size : M8x60) : Amazon.com.au: Home Improvement