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Datasheet generated 2026-10-07
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DIN 985 Hexagon Lock Nut, Steel class 6, M4, with Certificate, Zinc Plated (9850401-S)

Bufab · C-Parts · Lock Nuts · Sweden · bufab.com
Part Number
9850401-S  ·  HS 731816
DIN 985 Hexagon Lock Nut, Steel class 6, M4, with Certificate, Zinc Plated (9850401-S)

DIN 985 hexagon lock nut, M4, with certificate, Article number 9850401-S. Property class / material: steel class 6, surface finish zinc plated. Hexagon Lock Nut manufactured to DIN 985 with ISO metric (M) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.

Technical Specifications

StandardDIN 985
Property class / gradeCL.6
Class (detailed)CL.6
Thread typeM
Thread diameter4 mm
Pitch0.7 mm
Thread pitch classCoarse
Thread directionRight
ThreadingFully Threaded
Key width (across flats)7 mm
Surface treatmentZinc Bright Passivation Fe/Zn P1 (ZPL 3+)
Surface treatment codeZPL
Nut Diameter7.66 mm
Nut height5 mm
Thread standardISO metric (M)
CertificateEN 10204 inspection certificate on request
Article number9850401-S
CategoryNuts / Lock Nuts

Properties

MaterialSteel class 6
Primary standardDIN 985
Standard sizeM4
Thread standardISO metric (M)
MOQ1

Standards

Attached Documents