METRICcoarse60° flank

M22 × 2.5 Thread Dimensions

M22 x 2.5 is a coarse pitch METRIC thread. Pitch is 2.5 mm, equivalent to 10.16 threads per inch. The recommended tap drill leaves roughly 75% thread engagement.

Nominal Ø22 mm

Pitch2.5 mm

Threads per inch10.16

Pitch Ø20.38 mm

Tap drill19.5 mm

Thread profile

millimetres unless stated

M22 × 2.5 — basic profile60° flank angle · Not to scale

Designation: M22 x 2.5
Thread system: METRIC
Series: coarse
Flank angle: 60°
Major diameter: 22 mm / 0.87"
Pitch: 2.5 mm
Threads per inch: 10.16
Pitch diameter: 20.38 mm
Minor diameter (external): 18.93 mm
Minor diameter (internal): 19.29 mm
Thread depth: 1.53 mm
Recommended tap drill: Ø 19.5 mm / 0.77"

How these values are derived

Basic ISO thread geometry uses the fundamental triangle height H = 0.866025 × P. External minor diameter d₃ = d − 1.226869 × P, internal minor diameter D₁ = d − 1.082532 × P. Tap drill is given as nominal diameter minus pitch, which approximates a 75% thread engagement — adjust for tough materials or deep holes.

Fasteners using this thread42 specification pages

All M22 fasteners

DIN 912 ISO 4762 DIN 933 ISO 4017 DIN 931 ISO 4014

Specification	Length (mm)
DIN 912 M22 × 40 Hexagon Socket Head Cap Screw	40
DIN 912 M22 × 50 Hexagon Socket Head Cap Screw	50
DIN 912 M22 × 60 Hexagon Socket Head Cap Screw	60
DIN 912 M22 × 80 Hexagon Socket Head Cap Screw	80
DIN 912 M22 × 100 Hexagon Socket Head Cap Screw	100
ISO 4762 M22 × 40 Hexagon Socket Head Cap Screw	40
ISO 4762 M22 × 50 Hexagon Socket Head Cap Screw	50
ISO 4762 M22 × 60 Hexagon Socket Head Cap Screw	60
ISO 4762 M22 × 80 Hexagon Socket Head Cap Screw	80
ISO 4762 M22 × 100 Hexagon Socket Head Cap Screw	100
DIN 933 M22 × 40 Hexagon Head Screw / Bolt — Full Thread	40
DIN 933 M22 × 50 Hexagon Head Screw / Bolt — Full Thread	50
DIN 933 M22 × 60 Hexagon Head Screw / Bolt — Full Thread	60
DIN 933 M22 × 70 Hexagon Head Screw / Bolt — Full Thread	70
DIN 933 M22 × 80 Hexagon Head Screw / Bolt — Full Thread	80
DIN 933 M22 × 100 Hexagon Head Screw / Bolt — Full Thread	100
DIN 933 M22 × 120 Hexagon Head Screw / Bolt — Full Thread	120
ISO 4017 M22 × 40 Hexagon Head Screw — Full Thread, Product Grade A/B	40
ISO 4017 M22 × 50 Hexagon Head Screw — Full Thread, Product Grade A/B	50
ISO 4017 M22 × 60 Hexagon Head Screw — Full Thread, Product Grade A/B	60
ISO 4017 M22 × 70 Hexagon Head Screw — Full Thread, Product Grade A/B	70
ISO 4017 M22 × 80 Hexagon Head Screw — Full Thread, Product Grade A/B	80
ISO 4017 M22 × 100 Hexagon Head Screw — Full Thread, Product Grade A/B	100
ISO 4017 M22 × 120 Hexagon Head Screw — Full Thread, Product Grade A/B	120
DIN 931 M22 × 50 Hexagon Head Bolt — Partial Thread	50
DIN 931 M22 × 60 Hexagon Head Bolt — Partial Thread	60
DIN 931 M22 × 70 Hexagon Head Bolt — Partial Thread	70
DIN 931 M22 × 80 Hexagon Head Bolt — Partial Thread	80
DIN 931 M22 × 100 Hexagon Head Bolt — Partial Thread	100
DIN 931 M22 × 120 Hexagon Head Bolt — Partial Thread	120
DIN 931 M22 × 140 Hexagon Head Bolt — Partial Thread	140
DIN 931 M22 × 160 Hexagon Head Bolt — Partial Thread	160
DIN 931 M22 × 180 Hexagon Head Bolt — Partial Thread	180
ISO 4014 M22 × 50 Hexagon Head Bolt — Partial Thread, Product Grade A/B	50
ISO 4014 M22 × 60 Hexagon Head Bolt — Partial Thread, Product Grade A/B	60
ISO 4014 M22 × 70 Hexagon Head Bolt — Partial Thread, Product Grade A/B	70
ISO 4014 M22 × 80 Hexagon Head Bolt — Partial Thread, Product Grade A/B	80
ISO 4014 M22 × 100 Hexagon Head Bolt — Partial Thread, Product Grade A/B	100
ISO 4014 M22 × 120 Hexagon Head Bolt — Partial Thread, Product Grade A/B	120
ISO 4014 M22 × 140 Hexagon Head Bolt — Partial Thread, Product Grade A/B	140

Showing the first 40 of 42 specification pages.