DIN 933

DIN 933 screws with pre-applied thread treatment combine a hexagon head and full thread with a locking treatment applied before assembly. This NERON Piła category includes two variants: microencapsulated 267-27 MK and nylon 267-28 KLF treatment. Choose the locking treatment type, then check the dimensions and properties of the specific screw.

Microencapsulated pre-applied coating 267-27 MK

Pre-applied nylon patch 267-28 KLF

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DIN 933 with thread locking treatment

Hexagon-head screws DIN 933 are selected for connections requiring this head geometry and full thread. Pre-applied treatment is an additional design feature. DIN 933 alone does not specify the applied locking type or its parameters.

Two pre-applied treatment variants in the catalogue

Pre-applied microencapsulated treatment 267-27 MK — an adhesive locking treatment. Check activation and curing conditions in the documentation of the system used.
Pre-applied nylon treatment 267-28 KLF — a locking treatment that increases mechanical rotational resistance in the threaded connection.

Do not treat these variants as automatic substitutes. They differ in operating principle and installation requirements. Layer colour alone is insufficient to identify its properties.

How do you select a hexagon-head screw with pre-applied treatment?

Thread and length: compare diameter, pitch and length with the connection documentation.
Head: account for the bearing surface and spanner or socket clearance.
Material and class: check the required mechanical properties and protective coating.
Locking section: should lie in the area engaging the internal thread.
Operating conditions: confirm temperature range and environmental compatibility for the selected system.

Installation and replacement selection

Use tightening parameters specified for the connection and pre-applied treatment type. The locking coating does not replace correct screw selection or required clamping force. When changing the standard, manufacturer or treatment, compare documentation instead of relying on similar appearance alone.

Questions about DIN 933 with pre-applied treatment

Does every DIN 933 screw have a thread locking treatment?

No. The treatment must be specified in the product specification. This category concerns those designs.

Can the screw be reused after removal?

This depends on the system and its documentation. Do not assume the same rules for microencapsulated and nylon variants.

What should an enquiry to NERON in Piła include?

State DIN 933, thread size, length, material, class, pre-applied treatment type and number of pieces. Other geometries are in the section for screws with pre-applied thread treatment.