Dimensions mm · values as the standard states them Size P d1 k b 3 5.6
1.65
>=0,6xl
3.5 6.5
1.93
>=0,6xl
4 7.5
2.2
>=0,6xl
4.5 8.3
2.35
>=0,6xl
5 9.2
2.5
>=0,6xl
6 11
3
>=0,6xl
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 7997
3
d1 the nominal diameter of the thread 5.6
k head height 1.65
b thread length >=0,6xl Size sheet · DIN 7997
3.5
d1 the nominal diameter of the thread 6.5
k head height 1.93
b thread length >=0,6xl Size sheet · DIN 7997
4
d1 the nominal diameter of the thread 7.5
k head height 2.2
b thread length >=0,6xl Size sheet · DIN 7997
4.5
d1 the nominal diameter of the thread 8.3
k head height 2.35
b thread length >=0,6xl Size sheet · DIN 7997
5
d1 the nominal diameter of the thread 9.2
k head height 2.5
b thread length >=0,6xl Size sheet · DIN 7997
6
d1 the nominal diameter of the thread 11
k head height 3
b thread length >=0,6xl 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.