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Hexagon Socket Button Head Cap Screws (Metric Series) (ASTM F835M / F879M / A1-70)

ASME/ANSI B 18.3.4M - 1986 (R2008)

Display drawing:

美标ASME/ANSI B18.3.4M - 1986 (R2008) ASME Hexagon Socket Button Head Cap Screws (Metric Series) (ASTM F835M / F879M / A1-70)
Thread Size
d
M3 M4 M5 M6 M8 M10 M12 M16
P Pitch
dk max
min
k max
min
c Ref.
s Nominal Size
t min
e min
L maximum standard length Nominal Size
0.5 0.7 0.8 1 1.25 1.5 1.75 2
5.70 7.60 9.50 10.50 14.00 17.50 21.00 28.00
5.40 7.24 9.14 10.07 13.57 17.07 20.48 27.48
1.65 2.20 2.75 3.30 4.40 5.50 6.60 8.80
1.43 1.95 2.50 3.00 4.05 5.20 6.24 8.44
0.38 0.38 0.50 0.80 0.80 0.80 0.80 1.50
2.0 2.5 3.0 4.0 5.0 6.0 8.0 10.0
1.04 1.30 1.56 2.08 2.60 3.12 4.16 5.20
2.3 2.87 3.44 4.58 5.72 6.86 9.15 11.5
12 20 30 30 40 40 60 60
①,Screws of nominal lengths equal to or shorter than the longest standard lengths listed in Table shall be threaded full length.
For longer screws, the length of complete (full form) thread shall, at the option of the manufacturer, be between a minimum limit equal to twice the basic screw diameter plus 12.0 mm and a maximum limit of to within two pitches (threads) of the head.

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