Content with Dimensions

31 July 2018
Calculation of thread lengths Typical, unless specified in a product standard, dimensions for thread lengths (b) is calculated as follow: for l <= 125 mm: b = 2d + 6mm for 125 mm < l <= 200 mm: b = 2d + 12mm for l > 200mm: b = 2d + 25mm Where l is length of the bolt and b is the threaded part of the bolt.
Read more about ISO 888 Thread lengths for ISO metric fasteners (bolts)

23 November 2016
Dimensions of Nut Face Washers (HN) Size (d) M12 M16 M20 M22 M24 M27 M30 M36 Internal diameter (d1) 12.1-12.35 16.1-16.35 20.1-20.40 22.3-22.60 24.2-24.50 27.2-27.55 30.2-30.55 36.2-36.55 External diameter (d2) 22.7-24 27.7-29 34.4-36 37.4-39 41.4-43 46.4-48 50.1-52 60.1-62 Thickness (h) 2.7-4.3 3.7-4.3 3.7-4.3 3.7-4.3 3.7-4.3 4.4-5.6 4.4-5.6 5.4-6.6 Dimensions of Bolt Face Washers (HB) Size (d) M12 M16 M20 M22 M24 M27 M30 M36 Internal diameter
Read more about BS EN 14399-9 Basic dimensions for Nut Face Washers & Bolt Face Washers

08 April 2016
Direct Tension Indicators Washer – dimensions Dimensions of compressible washer-type direct tension indicator according to BS EN 14399-9:2018, Table 2. Size bolt diameter Internal diameter d1 External diameter d2 Thickness h1 Height over protrusion h2 Height of protrusions h3 Protrusion tangential diameter d3 Protrusion internal diameter d4 min max min max min max min max min M12 12,75 12,85 26,0 32,5 2,5 5,5 0,8 20,0 13,85 M16 16,75 16,85 35,0 36,8 3,0 6,0 0,8 25,0 17,85 M20 20,95 21,05 41,0 46,0 3,5 6,5 0,8 29,0 22,05 M22 23,05 23,15 46,5 50,6 4,0 7,0 0,8 33,0 24,15 M24 25,15 25,25 50,0 55,2 4,0 7,0 0,8 38,0 26,25 M27 28,30 28,40 54,0 62,1 4,0 7,0 0,8 43,0 29,40 M30 31,45 31,55 59,0 69,0 4,0 7,0 0,8 46,5 32,55 M36 37,75 37,85 78,0 83,0 4,0 7,5 0,8 56,0 38,85 Dimensions in millimetres DownloadPDF
Read more about BS EN 14399-9 Dimensions of Direct Tension Indicators washers