DIN EN 14399 - 4

Dimensional standard as per DIN EN 14399-4

• For hot-dip galvanized nuts, the dimensions apply before galvanizing.
• P is the pitch of thread.
dw, max. = actual

EN 14399-4 Standard

Size. Pitch (p) Width across corner (e) Width across Flat (s) Thickness of head (k) Thread Length (b) da dw Shank diameter (ds) Radius under head ( r ) Washer height (c) Major Diameter (D) Pitch Diameter (D1) Minor Diameter (D2)
  MM Min Min Max Min Max Min Max Max Min Min Max Min     MM Min Min Max Min
M16 2.0 29.56 26.16 27 9.25 10.75 28 30.00 19.20 24.90 15.30 16.70 1.2 0.4 0.6 15.68 15.96 14.50 14.60 13.80
M20 2.5 35.03 31.00 32 12.10 13.90 33 35.50 24.00 29.50 19.16 20.84 1.5 0.4 0.8 19.62 19.96 18.15 18.25 17.25
M22 2.5 39.55 35.00 36 13.10 14.90 34 36.50 26.00 33.30 21.16 22.84 1.5 0.4 0.8 21.62 21.96 20.15 20.25 19.25
M24 3.0 45.20 40.00 41 14.10 15.90 39 43.00 28.00 38.00 23.16 24.84 1.5 0.4 0.8 23.58 23.95 21.80 21.90 20.70
M27 3.0 50.85 45.00 46 16.10 17.90 41 45.00 32.00 42.80 26.16 27.84 2.0 0.4 0.8 26.58 26.95 24.80 24.90 23.70
M30 3.5 55.37 49.00 50 17.95 20.05 44 49.50 35.00 46.60 29.16 30.84 2.0 0.4 0.8 29.52 29.95 27.50 27.60 26.16
M36 4.0 66.44 58.80 60 21.95 24.05 52 59.00 41.00 55.90 35.00 37.00 2.0 9 M-36 4.0 66.44 58.80 60 21.95
M39 4.0 71.30 63.10 65 23.95 26.05 68 75.00 45.00 60.00 38.00 40.00 2.5 0.5 1.0 38.46 38.94 36.20 36.30 34.61
M42 4.5 76.95 68.10 70 24.95 27.05 74 82.50 48.00 64.70 41.00 43.00 2.5 0.5 1.0 41.44 41.94 38.80 38.90 37.07
M45 4.5 82.60 73.10 75 26.95 29.05 76 84.50 52.00 69.45 44.00 46.00 3.0 0.5 1.0 44.44 44.94 41.80 41.90 40.07
M48 5.0 88.25 78.10 80 28.95 31.05 82 92.00 55.00 74.20 47.00 49.00 3.0 0.5 1.0 47.40 47.93 44.50 44.60 42.52
M56 5.5 99.20 87.80 90 33.75 36.25 90 101.50 64.20 83.40 54.80 57.20 3.5 0.5 1.0 55.36 55.92 52.10 52.20 49.97
M64 6.0 110.50 97.80 100 38.75 41.25 100 113.00 73.20 92.90 62.80 65.20 4.0 0.5 1.0 63.32 63.92 59.80 59.90 57.42