Flat washers, ISO 7090 (chamfered, normal series): M5–M64 bore, outside diameter, thickness + M30–M48 washer files — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/flat-washers-iso-7090-m5-m64/ (sheet CC BY 4.0) Basis: Westfield Fasteners' ISO 7090 table (M5 to M64), cross-checked on M10 against McMaster-Carr's DIN 125 / ISO 7089 listings; four large-size washer files Catalog version: 2026-10-20 Overall (mm): length 110.0, width 110.0, height 8.0 - ISO 7090 is the normal-series plain washer with a chamfered outside edge, product grade A, in 200 HV and 300 HV. Westfield's page says it replaces type B of DIN 125. Columns in mm: bore d1 (nominal = minimum, then maximum), outside d2 (nominal = maximum, then minimum), thickness h (nominal, max, min). Sizes in brackets are non-preferred, as printed. - Conflict kept: Westfield prints d2 = 21 for M10 with a minimum of 19.48. A nominal of 21 would give a minimum of about 20.5, and McMaster-Carr's DIN 125 / ISO 7089 M10 washers are listed at 10.5 mm bore by 20 mm outside, the same as the existing page flat-washers-metric-m10-m24. The M10 outside diameter is therefore uncertain here (20 or 21); no M10 file is made. - The chamfer size and angle are not given in the Westfield page, so the files are plain annuli at M30, M36, M42 and M48 (larger than the M2–M24 sizes already on this site). Hardness classes: 200 HV (HV 200–300) and 300 HV (HV 300–400); stainless is 200 HV only (Westfield). - Smaller sizes: flat-washers-metric (M2–M8) and flat-washers-metric-m10-m24 (ISO 7089 / DIN 125-A). Large-OD version: large-washers-din-9021-iso-7093. thread d1 nom = min d1 max d2 nom = max d2 min h nom h max h min M5 5.3 5.48 10 9.64 1 1.1 0.9 M6 6.4 6.62 12 11.57 1.6 1.8 1.4 M8 8.4 8.62 16 15.57 1.6 1.8 1.4 M10 10.5 10.77 21 (as printed; see notes) 19.48 2 2.2 1.8 M12 13 13.27 24 23.48 2.5 2.7 2.3 (M14) 15 15.27 28 27.48 2.5 2.7 2.3 M16 17 17.27 30 29.48 3 3.3 2.7 (M18) 19 19.33 34 33.38 3 3.3 2.7 M20 21 21.33 37 36.38 3 3.3 2.7 (M22) 23 23.33 39 38.38 3 3.3 2.7 M24 25 25.33 44 43.38 4 4.3 3.7 (M27) 28 28.33 50 49.38 4 4.3 3.7 M30 31 31.39 56 55.26 4 4.3 3.7 (M33) 34 34.62 60 58.8 5 5.6 4.4 M36 37 37.62 64.8 64.8 5 5.6 4.4 (M39) 42 42.62 72 70.8 6 6.6 5.4 M42 45 45.62 78 76.8 8 9 7 (M45) 48 48.62 85 83.6 8 9 7 M48 52 52.74 92 90.6 8 9 7 (M52) 56 56.74 98 96.6 8 9 7 M56 62 62.74 105 103.6 10 11 9 (M60) 66 66.74 110 108.6 10 11 9 M64 70 70.74 115 113.6 10 11 9 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Westfield Fasteners: ISO 7090 plain washers, chamfered, normal series, M5 to M64: d1, d2, h (nom / max / min) — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/Washer-ISO7090-M.pdf - McMaster-Carr: DIN 125 A flat washers (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/din-125a-flat-washers Free files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/flat-washers-iso-7090-m5-m64/index.json API: https://xemstudio.com/api/geometry?object=flat-washers-iso-7090-m5-m64