DIN 913-916 Socket Set Screws Dimensions

For socket set screws, DIN 913-916 defines the dimensions, tolerances and product grades. The sections below describe the scope of the document, the properties it deliberately leaves to companion standards, and the equivalent designations across standards bodies.

DIN 913-916 — Scope

DIN 913-916 specifies the dimensions and tolerances of socket set screws. Material, property class, surface finish and packaging are governed by separate documents in the same standards family (for example ISO 898-1 for the mechanical property classes of bolts and screws).

Tolerance & Product Grades

DIN 913-916, alongside the related ISO 4026 / ISO 4029 / DIN 913-916 entries on this site, specifies product grades (typically A or B for fine work and C for general engineering) and tolerance classes for the controlling dimensions. Choose the grade against the precision your application requires.

Dimensions Specified by DIN 913-916

Companion Standards

DIN 913-916 controls only the geometry of socket set screws. The mechanical strength is set by ISO 898-1 (bolts and screws) or ISO 898-2 (nuts); the surface finish is governed by separate finish standards (e.g. ISO 4042 for electroplating). For corrosion testing, the relevant document is ISO 9227 (neutral salt spray).

When to Specify DIN 913-916

DIN 913-916 is still widely used in European mechanical engineering and as a cross-reference on legacy drawings; its ISO equivalent is preferred for new designs.