ISO 4035Hexagon thin nutExternal hexagon

ISO 4035 M20 Hexagon thin nut

ISO 4035 M20 is a hexagon thin nut, on a M20 × 1.5 mm metric thread. ISO version of the low hex nut, chamfered on both faces.

Dimensioned drawing — ISO 4035 M20s 30m 10
ISO 4035 M20 — Hexagon thin nutNominal dimensions in mm · Not to scale
Diameter20 mm
Pitch1.5 mm
Socket size s30 mm
Height m10 mm
DriveExternal hexagon

Dimensions

Standard
ISO 4035
Type
Hexagon thin nut
Size
M20
Thread
M20 × 1.5
Socket size s
30 mm
Height m
10 mm
Drive
External hexagon

Nominal values in millimetres as published in ISO 4035. Estimated weight 21.226 g per piece in steel (21.361 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.

Thread data

Full M20 thread page
DesignationM20 × 1.5 fine
Pitch1.5 mm
Major Ø20 mm
Pitch Ø19.03 mm
Minor Ø ext18.16 mm
Tap drillØ 18.5 mm

Other lengthsISO 4035 M20

All M20 specifications
M20

Interchangeability

ISO 4035 is catalogued with DIN 439 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.

Equivalent standardDIN 439Hexagon Thin Nut (Jam Nut)ComparisonISO 4035 vs DIN 439Field-by-field differences and a substitution verdict