ISOscrewsCountersunk head (90°)

ISO 2009 Slotted Countersunk Head Screw — Product Grade A

ISO equivalent of DIN 963, same 90° countersink.

Dimensioned drawing — ISO 2009 M4 × 25k 2.2L 25⌀7.5⌀4
ISO 2009 M4 × 25 — Countersunk head (90°)Nominal dimensions in mm · Not to scale

Dimensions9 sizes · millimetres

Thread dPitch P (mm)Head diameter dk (mm)Head height k (mm)
M20.43.81.2
M2.50.454.71.5
M30.55.61.65
M3.50.66.51.93
M40.77.52.2
M50.89.22.5
M61113
M81.2514.54
M101.5185

Nominal dimensions in millimetres as published in ISO 2009. Tolerances, material requirements and marking are defined separately by the issuing body.

Available sizeslinked to individual specification pages

M20.4 mm pitch
M2 × 4M2 × 5M2 × 6M2 × 8M2 × 10M2 × 12M2 × 16
M2.50.45 mm pitch
M2.5 × 4M2.5 × 5M2.5 × 6M2.5 × 8M2.5 × 10M2.5 × 12M2.5 × 16M2.5 × 20
M30.5 mm pitch
M3 × 5M3 × 6M3 × 8M3 × 10M3 × 12M3 × 16M3 × 20M3 × 25
M3.50.6 mm pitch
M3.5 × 6M3.5 × 8M3.5 × 10M3.5 × 12M3.5 × 16M3.5 × 20M3.5 × 25M3.5 × 30
M40.7 mm pitch
M4 × 6M4 × 8M4 × 10M4 × 12M4 × 16M4 × 20M4 × 25M4 × 30M4 × 40
M50.8 mm pitch
M5 × 8M5 × 10M5 × 12M5 × 16M5 × 20M5 × 25M5 × 30M5 × 40M5 × 50
M6
M6 × 10M6 × 12M6 × 16M6 × 20M6 × 25M6 × 30M6 × 35M6 × 40M6 × 50
M81.25 mm pitch
M8 × 12M8 × 16M8 × 20M8 × 25M8 × 30M8 × 35M8 × 40M8 × 50M8 × 60
M101.5 mm pitch
M10 × 16M10 × 20M10 × 25M10 × 30M10 × 35M10 × 40M10 × 50M10 × 60

Thread referencesused by the sizes above

M2 × 0.4M2.5 × 0.45M3 × 0.5M3.5 × 0.6M4 × 0.7M5 × 0.8M8 × 1.25M10 × 1.5