Expand description
ISO metric screw threads and the holes made for them, in millimetres: the coarse series of ISO 261 from M1.6 to M24, with
- the pitch (ISO 261) and the basic minor diameter
D1 = D - 1.0825 P(ISO 724); - the tap drill for a 6H internal thread (ISO 2306);
- clearance holes, close (fine), normal (medium) and loose (coarse) fit (ISO 273);
- the counterbore for a socket head cap screw (ISO 4762): its diameter as
DIN 974-1 gives it, its depth the screw’s head height
k = D, so the head sits flush; - the 90° countersink for a countersunk socket screw (ISO 10642): its diameter as ISO 15065 gives it, which stops at M20.
Structs§
- Metric
Size - One size of the coarse series.
Enums§
- Fit
- How much play a clearance hole leaves around its screw (ISO 273).
Constants§
- SIZES
- The coarse series, smallest first.
- TRIANGLE_
HEIGHT H, the height of the fundamental triangle of the ISO metric profile, per unit of pitch:sqrt(3) / 2.
Functions§
- metric
- The size called
name:M6.