DIN 985Nylon insert lock nutExternal hexagon

DIN 985 M14 Nylon insert lock nut

DIN 985 M14 is a nylon insert lock nut, on a M14 × 1.5 mm metric thread. A full hex nut with a nylon collar that grips the thread and resists vibration loosening. Note that the nylon insert has a temperature limit — above roughly 120 °C it loses its locking effect.

Dimensioned drawing — DIN 985 M14s 21m 17
DIN 985 M14 — Nylon insert lock nutNominal dimensions in mm · Not to scale
Diameter14 mm
Pitch1.5 mm
Socket size s21 mm
Thickness h18.5 mm
Height m17 mm
DriveExternal hexagon

Dimensions

Standard
DIN 985
Type
Nylon insert lock nut
Size
M14
Socket size s
21 mm
Height m
17 mm
Total height h
18.5 mm
Drive
External hexagon

Nominal values in millimetres as published in DIN 985. Estimated weight 17.681 g per piece in steel (17.794 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.

DesignationM14 × 1.5 fine
Pitch1.5 mm
Major Ø14 mm
Pitch Ø13.03 mm
Minor Ø ext12.16 mm
Tap drillØ 12.5 mm

Other lengthsDIN 985 M14

All M14 specifications

Interchangeability

DIN 985 is catalogued with ISO 10511 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.