METRICfine60° flankISO 262

M14 × 1.5 fine Thread Dimensions

M14 x 1.5 (fine) is a fine ISO Metric thread. Pitch is 1.5 mm, equivalent to 16.93 threads per inch. The recommended tap drill leaves roughly 75% thread engagement.

Major Ø14 mm
Pitch1.5 mm
Threads per inch16.93
Pitch Ø13.03 mm
Tap drill12.5 mm

Thread profile

millimetres unless stated
Thread profile — M14 x 1.5 (fine)d 14d2 13.03d3 12.16mm60°P 1.5h3 0.92tap ⌀12.5
M14 × 1.5 fine — basic profile60° flank angle · Not to scale

Basic information

Designation
M14 x 1.5 (fine)
Thread system
ISO Metric
Series
fine
Standard
ISO 262
Basic profile
ISO 68-1 basic profile
Flank angle
60°

Dimensions

Major diameter
14 mm
Pitch
1.5 mm
Threads per inch
16.93
Pitch diameter
13.03 mm
Minor diameter (external)
12.16 mm
Minor diameter (internal)
12.38 mm
Thread depth
0.92 mm
Recommended tap drill
Ø 12.5 mm

How these values are derived

computed from the basic profile

These figures follow the ISO 68-1 basic profile of ISO 262. A 60° basic profile uses a fundamental triangle height H = 0.866025 × P, with external minor diameter d₃ = d − 1.226869 × P and internal minor diameter D₁ = d − 1.082532 × P; the two differ because the external root is rounded while the internal crest is truncated. A 55° Whitworth profile uses H = 0.960491 × P and a thread height of 0.640327 × P. The recommended tap drill is given as nominal diameter minus pitch, which approximates 75% thread engagement — adjust it for tough materials or deep holes.

Compatible parts78 specification pages

All M14 fasteners

Every fastener below is threaded M14 × 1.5 fine, so a nut, bolt or washer picked from this list will mate with it.

DIN 912ISO 4762DIN 7991ISO 10642DIN 933ISO 4017DIN 931ISO 4014DIN 934ISO 4032DIN 439ISO 4035DIN 985ISO 10511ISO 4161DIN 6923
SpecificationLength
DIN 912 M14 × 25 Hexagon Socket Head Cap Screw25 mm
DIN 912 M14 × 30 Hexagon Socket Head Cap Screw30 mm
DIN 912 M14 × 35 Hexagon Socket Head Cap Screw35 mm
DIN 912 M14 × 40 Hexagon Socket Head Cap Screw40 mm
DIN 912 M14 × 50 Hexagon Socket Head Cap Screw50 mm
DIN 912 M14 × 60 Hexagon Socket Head Cap Screw60 mm
DIN 912 M14 × 80 Hexagon Socket Head Cap Screw80 mm
DIN 912 M14 × 100 Hexagon Socket Head Cap Screw100 mm
ISO 4762 M14 × 25 Hexagon Socket Head Cap Screw25 mm
ISO 4762 M14 × 30 Hexagon Socket Head Cap Screw30 mm
ISO 4762 M14 × 35 Hexagon Socket Head Cap Screw35 mm
ISO 4762 M14 × 40 Hexagon Socket Head Cap Screw40 mm
ISO 4762 M14 × 50 Hexagon Socket Head Cap Screw50 mm
ISO 4762 M14 × 60 Hexagon Socket Head Cap Screw60 mm
ISO 4762 M14 × 80 Hexagon Socket Head Cap Screw80 mm
ISO 4762 M14 × 100 Hexagon Socket Head Cap Screw100 mm
DIN 7991 M14 × 25 Hexagon Socket Countersunk Head Screw25 mm
DIN 7991 M14 × 30 Hexagon Socket Countersunk Head Screw30 mm
DIN 7991 M14 × 35 Hexagon Socket Countersunk Head Screw35 mm
DIN 7991 M14 × 40 Hexagon Socket Countersunk Head Screw40 mm
DIN 7991 M14 × 50 Hexagon Socket Countersunk Head Screw50 mm
DIN 7991 M14 × 60 Hexagon Socket Countersunk Head Screw60 mm
DIN 7991 M14 × 80 Hexagon Socket Countersunk Head Screw80 mm
DIN 7991 M14 × 100 Hexagon Socket Countersunk Head Screw100 mm
ISO 10642 M14 × 25 Hexagon Socket Countersunk Head Screw25 mm
ISO 10642 M14 × 30 Hexagon Socket Countersunk Head Screw30 mm
ISO 10642 M14 × 35 Hexagon Socket Countersunk Head Screw35 mm
ISO 10642 M14 × 40 Hexagon Socket Countersunk Head Screw40 mm
ISO 10642 M14 × 50 Hexagon Socket Countersunk Head Screw50 mm
ISO 10642 M14 × 60 Hexagon Socket Countersunk Head Screw60 mm
ISO 10642 M14 × 80 Hexagon Socket Countersunk Head Screw80 mm
ISO 10642 M14 × 100 Hexagon Socket Countersunk Head Screw100 mm
DIN 933 M14 × 25 Hexagon Head Screw / Bolt — Full Thread25 mm
DIN 933 M14 × 30 Hexagon Head Screw / Bolt — Full Thread30 mm
DIN 933 M14 × 35 Hexagon Head Screw / Bolt — Full Thread35 mm
DIN 933 M14 × 40 Hexagon Head Screw / Bolt — Full Thread40 mm
DIN 933 M14 × 50 Hexagon Head Screw / Bolt — Full Thread50 mm
DIN 933 M14 × 60 Hexagon Head Screw / Bolt — Full Thread60 mm
DIN 933 M14 × 70 Hexagon Head Screw / Bolt — Full Thread70 mm
DIN 933 M14 × 80 Hexagon Head Screw / Bolt — Full Thread80 mm

Showing the first 40 of 78 specification pages.

Related

Other pitches at the same 14 mm diameter — a fine pitch on a coarse diameter, or the reverse, is the usual substitution question.

M14 × 2

Neighbouring sizes in ISO Metric.

M10 × 1 fineM11 × 1 fineM12 × 1.5 fineM12 × 1.25 fineM16 × 1.5 fineM18 × 2 fineM18 × 1.5 fineM20 × 2 fine