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Shapes of screws may vary in size depending on the manufacturer or standard. The shape of the hole has been machined for ISO / JIS standard screws.
Screw standard ISO / JIS
Screw head ISO / JIS standard D H ID
Countersunk screw M1.4 2 0.5 1.35
Countersunk screw M2 4 1.2 1.9
Countersunk screw M2.5 5 1.45 2.4
Countersunk screw M3 6 1.75 2.9
Countersunk screw M3.5 7 2 3.4
Countersunk screw M4 8 2.3 3.9
Countersunk screw M5 10 2.8 4.8
Countersunk screw M6 12 3.4 5.9
Countersunk screw M8 16 4.4 7.8
Countersunk screw M10 20 5.7 9.8
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Code Product name D H N.W. Screw standard M Adsorptive power
kgf
H16 pot magnet dia. 16, x height 5.2 mm, internal thread for M3 16 5.2 7.1 M3 5 kgf
H20 pot magnet dia. 20, x height 7.2 mm, internal thread for M4 20 7.2 14 M4 8 kgf
H25 pot magnet dia. 25, x height 7.7 mm, internal thread for M5 25 7.7 25 M5 18 kgf
H32 pot magnet dia. 32, x height 7.8 mm, internal thread for M5 32 7.8 44 M5 30 kgf
H36 pot magnet dia. 36, x height 7.6 mm, internal thread for M6 36 7.6 55 M6 40 kgf
H40 pot magnet dia. 40, x height 7.8 mm, internal thread for M6 40 7.8 78 M6 50 kgf
H42 pot magnet dia. 42, x height 8.8 mm, internal thread for M6 42 8.8 86 M6 65 kgf
H48 pot magnet dia. 48, x height 10.8 mm, internal thread for M8 48 10.8 132 M8 72 kgf
H60 pot magnet dia. 60, x height 15 mm, internal thread for M8 60 15 268 M8 110 kgf
H75 pot magnet dia. 75, x height 17.8 mm, internal thread for M10 75 17.8 508 M10 155 kgf
Code Product name D H N.W. Screw standard M Adsorptive power
kgf