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Unit:mm

Aerospace - Bolts, Normal Spline Head, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1100 MPa

ISO 9255 - 2008

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国际ISO 9255 - 2008 ISO9255 9255ISO Aerospace - Bolts, Normal Spline Head, Normal Shank, Short or Medium Length MJ Threads, Metallic Material, Coated or Uncoated, Strength Classes Less Than or Equal to 1100 MPa
Code
MJ4 MJ5 MJ6 MJ7 MJ8 MJ10 MJ12
Code
P Pitch
ds Nominal Size
before coating max
min
coating(close) max
min
coating(large) max
min
Uncoated bolts(close) max
min
Uncoated bolts(large) max
min
d2 max
min
d3 Nominal Size
max
min
dk min
dc max
d1 max
min
d8 max
min
c min
k max
min
L2 ±0.2
b Thread(short)
Thread(medium)
L3 Thread(short)
Thread(medium)
L1
R max
min
w max
min=nominal size
T min
wrenching dash number
040 050 060 070 080 100 120
0.7 0.8 1 1 1 1.25 1.25
4 5 6 7 8 10 12
3.97 4.97 5.97 6.967 7.967 9.967 11.964
3.955 4.955 5.955 6.952 7.952 9.952 11.949
3.99 4.99 5.99 6.987 7.987 9.987 11.984
3.965 4.965 5.965 6.962 7.962 9.962 11.959
4 5 6 7 8 10 12
3.88 4.88 5.88 6.85 7.85 9.85 11.82
3.99 4.99 5.99 6.987 7.987 9.987 11.984
3.978 4.978 5.978 6.972 7.972 9.972 11.966
4 5 6 7 8 10 12
3.88 4.88 5.88 6.85 7.85 9.85 11.82
/ 3.7 4.6 5.4 5.7 7.2 8.5
/ 3.2 4.1 4.9 5.2 6.7 8
3 3.4 4.2 5.2 6.2 7.9 9.8
3 3.9 4.7 5.7 6.7 8.4 10.3
2.5 2.9 3.7 4.7 5.7 7.4 9.3
6 7 8 9 10 12 14
8.3 9.1 10.6 12.1 13.6 16.7 19.9
1.14 1.14 1.54 1.54 1.54 1.74 1.74
1 1 1.4 1.4 1.4 1.6 1.6
1.24 1.64 1.64 2.04 2.04 2.54 2.54
1.1 1.5 1.5 1.9 1.9 2.4 2.4
0.8 1 1.2 1.4 1.6 2 2.4
5.5 6.5 7.5 8.2 8.6 10.1 11.4
5.02 5.92 6.92 7.62 8.02 9.4 10.7
2~40 3~50 3~60 4~70 4~80 5~100 6~120
7.5 9 10 11 11.5 14.5 16
10 12 14 15 16.5 20.5 22.5
5 6 7 7 7.5 9 10
6 7.5 8.5 9.5 10.5 13 14.5
3.5 4.5 5.2 5.9 6.3 7.7 8.8
0.4 0.5 0.7 0.7 0.7 0.8 0.9
0.2 0.3 0.5 0.5 0.5 0.6 0.6
/ 2.9 3.2 3.7 4.1 5.1 6
/ 2.5 2.8 3.3 3.7 4.7 5.6
2.5 2.8 3.5 3.8 3.9 4.2 4.5
060 070 080 090 100 120 140
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