Hexagon Head Set Screws - DIN 933, Stainless Steel, Grade 18/8 - (A2) 304, M14 X 50 mm

Overview

DIN 933 defines a hexagon head set screw with a fully threaded shank. The standard covers the dimensional form of the head, thread and length so the fastener can be selected consistently by diameter, thread and overall length. The fully threaded design is useful where thread engagement is required along the full length of the fastener, or where the screw is installed into a tapped hole rather than used with a nut.

This selected size is specified with diameter M14, length 50 mm, thread M14, pitch 2 mm.

Sold in multiples of '25 pieces. 1 Box = '25 pieces.

Material, Grade & Strength

A2 stainless steel, commonly associated with 304 stainless, provides good general corrosion resistance for outdoor, clean industrial and food-related environments. Stainless threads can gall, so anti-seize may be required.

Finish & Corrosion Protection

The finish should be matched to the environment, appearance requirements and expected corrosion exposure.

Typical Uses

DIN 933 set screws are commonly used in machinery, fabricated steelwork, brackets, frames, maintenance work and general engineering where a fully threaded hexagon head fastener is preferred.

Technical Tips

• Use DIN 933 where full thread engagement is required.
• For bolted joints, use a matching nut and washer of the same thread size and suitable strength class.
• For Grade 8.8, 10.9 or 12.9 parts, use correctly rated mating nuts and washers.
• Torque values vary by diameter, pitch, finish and lubrication; confirm the correct torque for critical assemblies.

Selection Advice

Choose DIN 933 when a fully threaded hexagon head fastener is required. Choose DIN 931 when the joint benefits from a partially threaded plain shank for alignment or shear loading.

Frequently Asked Questions

What is the difference between DIN 933 and DIN 931? DIN 933 is fully threaded, while DIN 931 is partially threaded. DIN 933 is often preferred for tapped holes or applications where the full length must provide thread engagement.