U-Bolt M16 x55mm Thread, 124mm Inside Diam, 157mm Inside Height T316 Stainless Steel Includes two nuts per leg Conforms to British Standard 3974 PART 1: 1974 Fig 10. Non-Gripped Type U-Bolt (Guide) Use where it is undesirable to restrict longitudinal movement (Perhaps to allow vibration, or thermal expansion) T316 Stainless Steel is suitable for anywhere you would use T304 BUT has the added advantage of being suitable for marine solutions. The molybdenum increases the corrosion resistance to withstand attack from many industrial chemicals and solvents and of course chlorides All Measurements in mm Inside Diameter : 124 Inside Height : 157 Leg Centers : 140 Leg Length : 95 Material : T316 Stainless Steel (A4) Pipe Nominal Bore : 100 Suggested Pipe OD : 114.3 Thread length : 55 Thread Size : M16 Our manufacturing tolerances are + / - 1 mm) We use roll threading so the diameter of the bar is usually less than the thread size. Please ask if unsure