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Miscellanea
> Mechanics > Threads
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Metric
Metric ISO DIN 13 (M)
Metric Fine ISO DIN 13 (MF)
Whitworth
Whitworth Pipe Cylindrical G (BSP)
Whitworth Fine (BSF)
Allen
DIN 912 screw
DIN 913 Set screw
DIN 916 Set screw
Calculation
Minimum thread depth / height of nut
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Coefficients Cv Kv
Flow equations
Flanges
ANSI/ASME vs ISO
Valve books
Designation of the depth of thread / Height of nut
d: nominal diameter
P: pitch
Pair of Materials
Minimum height (h)
d/P<9
d/P=>9
Bolt and nut of the same material with standard thread
0,8·d
(normalized value for nuts according DIN 555 and DIN 934)
(8.8) Steel bolt in GG
1,0·d
1,2·d
(10.9)Steel bolt in GG
1,0·d
1,2·d
Steel bolt in pure Al
1,0·d
1,2·d
(10.9) Steel bolt in GG
2,2·d
(8.8) Steel bolt in Al alloy (AlCuMg1F40)
1,1·d
1,4·d
(8.8) Steel bolt en St 37
1,0·d
1,25·d
(10.9) Steel bolt en St 37
1,25·d
1,4·d
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