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  4. ISO 8677 Mushroom Head Square Neck Bolts

ISO 8677 Mushroom Head Square Neck Bolts


ISO 8677 Equivalent

ISO 8677 PN 82406 UNI 5731 CSN 86771


ISO 8677 Mushroom Head Square Neck Bolts
Mushroom Head Square Neck Bolts

ISO 8677 Dimensions

Thread d P b dk ds f k r1 r2 r3 v
l ? 125mm 125 < l ? 200mm l > 200mm max. min. max. min. max. min. max. min. approx. max. max. max. min.
M5 0.8 16 22 – 13.55 12.45 5 4.52 4.1 2.9 3.3 2.7 10.7 0.5 0.75 5.48 4.52
6 1 18 24 – 16.55 15.45 6 5.52 4.6 3.4 3.88 3.12 12.6 0.5 0.9 6.48 5.52
M8 1.25 22 28 41 20.65 19.35 8 7.42 5.6 4.4 4.88 4.12 16 0.5 1.2 8.58 7.42
M10 1.5 26 32 45 24.65 23.35 10 9.42 6.6 5.4 5.38 4.62 19.2 0.5 1.5 10.58 9.42
M12 1.75 30 36 49 30.65 29.35 12 11.3 8.75 7.25 6.95 6.05 24.1 1 1.8 12.7 11.3
M16 2 38 44 57 38.8 37.2 16 15.3 12.9 11.1 8.95 8.05 29.3 1 2.4 16.7 15.3
M20 2.5 46 52 65 46.8 45.2 20 19.16 15.9 14.1 11.05 9.95 33.9 1 3 20.84 19.16
l M5 M6 M8 M10 M12 M16 M20
nominal size min. max. ls min. lg max. ls min. lg max. ls min. lg max. ls min. lg max. ls min. lg max. ls min. lg max. ls min. lg max.
16 15.1 16.9 – 8 – 10                    
20 18.95 21.05 – 8 – 10 – 12 – 14            
25 23.95 26.05 – 8 – 10 – 12 – 14            
30 28.95 31.05 – 18 – 10 – 12 – 14 – 18        
35 33.75 36.25 15 19 12 17 – 12 – 14 – 18        
40 38.75 41.25 20 24 17 22 11.75 18 – 14 – 18        
45 43.75 46.25 25 29 22 27 16.75 23 11.5 19 – 18        
50 48.75 51.25 30 34 27 32 21.75 28 16.5 24 – 18        
55 53.5 56.5 35 39 32 37 26.75 33 21.5 29 16.25 25 – 23    
60 58.5 61.5 40 44 37 42 31.75 38 26.5 34 21.25 30 – 23    
65 63.5 66.5 45 49 42 47 36.75 43 31.5 39 26.75 35 17 27    
70 68.5 71.5 50 54 47 52 41.75 48 36.5 44 31.25 40 22 32 – 28.5
80 78.5 81.5 60 64 57 62 51.75 58 46.5 54 41.25 50 32 42 21.5 34
90 88.25 91.75     67 72 61.75 68 56.5 64 51.25 60 42 52 31.5 44
100 98.25 101.75     77 82 71.75 78 66.5 74 61.25 70 52 62 41.5 54
110 108.25 111.75     87 92 81.75 88 76.5 84 71.25 80 62 72 51.5 64
120 118.25 121.75     97 102 91.75 98 86.5 94 81.25 90 72 82 61.5 74
130 128 132     101 106 95.75 102 90.5 98 85.25 94 76 86 65.5 78
140 138 142     111 116 105.75 112 108.5 108 95.25 104 86 96 75.5 8
150 148 152     121 126 115.75 122 110.5 118 105.25 114 96 106 85.5 98
160 156 164             120.5 128 115.25 124 106 116 95.5 108
180 176 184             140.5 148 135.25 144 126 136 115.5 128
200 195.4 204.6             160.5 168 155.25 164 146 156 135.5 148