METRICfine60° flank

M16 × 1.5 fine Thread Dimensions

M16 x 1.5 (fine) is a fine pitch METRIC thread. Pitch is 1.5 mm, equivalent to 16.93 threads per inch. The recommended tap drill leaves roughly 75% thread engagement.

Nominal Ø16 mm
Pitch1.5 mm
Threads per inch16.93
Pitch Ø15.03 mm
Tap drill14.5 mm

Thread profile

millimetres unless stated
Thread profile — M16 x 1.5 (fine)d 16d2 15.03d3 14.16mm60°P 1.5h3 0.92tap ⌀14.5
M16 × 1.5 fine — basic profile60° flank angle · Not to scale
Designation
M16 x 1.5 (fine)
Thread system
METRIC
Series
fine
Flank angle
60°
Major diameter
16 mm / 0.63"
Pitch
1.5 mm
Threads per inch
16.93
Pitch diameter
15.03 mm
Minor diameter (external)
14.16 mm
Minor diameter (internal)
14.38 mm
Thread depth
0.92 mm
Recommended tap drill
Ø 14.5 mm / 0.57"

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 thread128 specification pages

All M16 fasteners
DIN 912ISO 4762DIN 7991ISO 10642ISO 7380DIN 7984DIN 933ISO 4017DIN 931ISO 4014DIN 916DIN 914DIN 915DIN 913ISO 4029
SpecificationLength (mm)
DIN 912 M16 × 25 Hexagon Socket Head Cap Screw25
DIN 912 M16 × 30 Hexagon Socket Head Cap Screw30
DIN 912 M16 × 35 Hexagon Socket Head Cap Screw35
DIN 912 M16 × 40 Hexagon Socket Head Cap Screw40
DIN 912 M16 × 50 Hexagon Socket Head Cap Screw50
DIN 912 M16 × 60 Hexagon Socket Head Cap Screw60
DIN 912 M16 × 80 Hexagon Socket Head Cap Screw80
DIN 912 M16 × 100 Hexagon Socket Head Cap Screw100
ISO 4762 M16 × 25 Hexagon Socket Head Cap Screw25
ISO 4762 M16 × 30 Hexagon Socket Head Cap Screw30
ISO 4762 M16 × 35 Hexagon Socket Head Cap Screw35
ISO 4762 M16 × 40 Hexagon Socket Head Cap Screw40
ISO 4762 M16 × 50 Hexagon Socket Head Cap Screw50
ISO 4762 M16 × 60 Hexagon Socket Head Cap Screw60
ISO 4762 M16 × 80 Hexagon Socket Head Cap Screw80
ISO 4762 M16 × 100 Hexagon Socket Head Cap Screw100
DIN 7991 M16 × 25 Hexagon Socket Countersunk Head Screw25
DIN 7991 M16 × 30 Hexagon Socket Countersunk Head Screw30
DIN 7991 M16 × 35 Hexagon Socket Countersunk Head Screw35
DIN 7991 M16 × 40 Hexagon Socket Countersunk Head Screw40
DIN 7991 M16 × 50 Hexagon Socket Countersunk Head Screw50
DIN 7991 M16 × 60 Hexagon Socket Countersunk Head Screw60
DIN 7991 M16 × 80 Hexagon Socket Countersunk Head Screw80
DIN 7991 M16 × 100 Hexagon Socket Countersunk Head Screw100
ISO 10642 M16 × 25 Hexagon Socket Countersunk Head Screw25
ISO 10642 M16 × 30 Hexagon Socket Countersunk Head Screw30
ISO 10642 M16 × 35 Hexagon Socket Countersunk Head Screw35
ISO 10642 M16 × 40 Hexagon Socket Countersunk Head Screw40
ISO 10642 M16 × 50 Hexagon Socket Countersunk Head Screw50
ISO 10642 M16 × 60 Hexagon Socket Countersunk Head Screw60
ISO 10642 M16 × 80 Hexagon Socket Countersunk Head Screw80
ISO 10642 M16 × 100 Hexagon Socket Countersunk Head Screw100
ISO 7380 M16 × 25 Hexagon Socket Button Head Screw25
ISO 7380 M16 × 30 Hexagon Socket Button Head Screw30
ISO 7380 M16 × 35 Hexagon Socket Button Head Screw35
ISO 7380 M16 × 40 Hexagon Socket Button Head Screw40
ISO 7380 M16 × 50 Hexagon Socket Button Head Screw50
ISO 7380 M16 × 60 Hexagon Socket Button Head Screw60
ISO 7380 M16 × 80 Hexagon Socket Button Head Screw80
ISO 7380 M16 × 100 Hexagon Socket Button Head Screw100

Showing the first 40 of 128 specification pages.