ISO 4032Hexagon nutExternal hexagon

ISO 4032 M6 Hexagon nut

ISO 4032 M6 is a hexagon nut, on a M6 × 1 mm metric thread. ISO equivalent of DIN 934. In practice these two are treated as interchangeable in purchasing for the common stock range.

ISO 4032 M6 — Hexagon nutNominal dimensions in mm · Not to scale

Diameter6 mm

Pitch1 mm

Socket size s10 mm

Height m5.2 mm

DriveExternal hexagon

Dimensions

Standard: ISO 4032
Type: Hexagon nut
Size: M6
Thread: M6 × 1
Socket size s: 10 mm
Height m: 5.2 mm
Drive: External hexagon

Nominal values in millimetres as published in ISO 4032. Estimated weight 1.497 g per piece in steel (1.507 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.

Thread data

Full M6 thread page

DesignationM6 × 1

Pitch1 mm

Nominal Ø6 mm

Pitch Ø5.35 mm

Minor Ø ext4.77 mm

Tap drillØ 5 mm

Other lengthsISO 4032 M6

All M6 specifications

Interchangeability

ISO 4032 is catalogued with DIN 934 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.

Equivalent standardDIN 934Hexagon Full Nut ComparisonISO 4032 vs DIN 934Field-by-field differences and a substitution verdict

Choosing and fitting this size

ISO 4032 M6 is a M6 nut, on a 1 mm coarse pitch. Mating threads should be a matching class nut in the same property class.

Common stock grades are 8.8, 10.9 and 12.9 in steel, plus A2-70 and A4-80 in stainless. Class 10.9 and 12.9 carry roughly 1.25 and 1.5 times the proof load of 8.8, but they also need a properly rated mating nut — a class 8 nut under a 12.9 bolt simply moves the failure into the thread. Zinc-plated 10.9 and above should be baked to avoid hydrogen embrittlement.

For a tapped hole, M6 × 1 mm takes a 5 mm tap drill, and the external thread's minor diameter is 4.77 mm — that is the section carrying the load, not the nominal M6 figure. Thread engagement of at least one times the nominal diameter is what lets the bolt fail before the thread strips.