Dimensions mm · values as the standard states them Size P m recess Z k d2 M3 0.5 PZ1
1.65
5.6
M4 0.7 PZ2
2.2
8
M5 0.8 PZ2
2.5
9.2
M6 1 PZ3
3
11
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.
Size sheet · DIN 7500 M
M3
m groove width (recess Z) PZ1
k head height 1.65
d2 head diameter 5.6 Thread · ISO 261/262
Pitch P 0.5
d2 2.675
d3 2.387
Tap drill 2.5
Stress area As 5.03 mm² Size sheet · DIN 7500 M
M4
m groove width (recess Z) PZ2
k head height 2.2
d2 head diameter 8 Thread · ISO 261/262
Pitch P 0.7
d2 3.545
d3 3.141
Tap drill 3.3
Stress area As 8.78 mm² Size sheet · DIN 7500 M
M5
m groove width (recess Z) PZ2
k head height 2.5
d2 head diameter 9.2 Thread · ISO 261/262
Pitch P 0.8
d2 4.48
d3 4.019
Tap drill 4.2
Stress area As 14.18 mm² Size sheet · DIN 7500 M
M6
m groove width (recess Z) PZ3
k head height 3
d2 head diameter 11 Thread · ISO 261/262
Pitch P 1
d2 5.35
d3 4.773
Tap drill 5
Stress area As 20.12 mm² Provenance
Draft — values taken from a single source and not yet cross-checked.
fasteners.eu dimensions, lengths, materials, property classes, current norm, equivalent norms Accessed 2026-09-23 · For design and safety-critical use, consult the current edition of the standard.
Data notes (1) Status (active/withdrawn) could not be confirmed from the sources used.