DINscrewsCountersunk head (90°)

DIN 963 Slotted Countersunk Head Screw

Slotted flat head screw for a flush finish. Note that countersunk heads pull the joint sideways, so they should not be used to locate parts.

Dimensioned drawing — DIN 963 M4 × 25k 2.2L 25⌀7.5⌀4
DIN 963 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 DIN 963. 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