A2 Stainless Steel Dowel Pins

A dowel pin is a parallel, headless cylindrical fastener used to establish an accurate and repeatable position between two or more components. It is normally installed into accurately machined or reamed holes and may be used alongside separate bolts or screws that clamp the assembly together.

Key features

• Precision cylindrical form: Supports accurate alignment and repeatable component location.
• Plain headless design: Fits within the assembly without a projecting head.
• 2mm nominal diameter: Suitable for smaller precision engineering and component location applications.
• 8mm length: Provides a compact locating pin for assemblies with limited available depth.
• A1 stainless steel: Provides corrosion resistance for suitable indoor and controlled external environments.
• DIN 7 design: Manufactured to the dimensional requirements associated with DIN 7 parallel dowel pins.

A1 stainless steel dowel pins are used in mechanical and engineering assemblies where components must be aligned accurately or returned to a repeatable position after dismantling.

Typical applications include:

• Machine and equipment assembly
• Jigs, fixtures and tooling
• Gearbox and motor housings
• Pumps, valves and mechanical components
• Mould and die alignment
• General precision engineering
• Component location during assembly

The pin is designed to be installed into a suitably sized and toleranced hole. The required hole diameter and fit depend on the application and whether the pin is intended to provide an interference, transition or clearance fit. Always check the relevant engineering drawing or specification before installation.

This dowel pin is specified with reference to the following dimensional standards:

• DIN 7: Parallel dowel pins for precision location and alignment.
• ISO 2338: Current equivalent standard for parallel pins with cylindrical form.
• ISO 8734: Reference standard for parallel pins of hardened steel and martensitic stainless steel where applicable.

For the 2mm diameter and 8mm length, the DIN 7 dimensional data includes a nominal 2mm diameter and a 0.30mm end chamfer dimension. The m6 tolerance is commonly associated with precision locating applications for this type of dowel pin. :chatgpt-content-reference{index="1"}

Technical note: Confirm the required material grade, diameter tolerance, hardness, hole size and dimensional standard against the application specification before use. A material described commercially as A1 stainless steel should not be assumed to meet every material or hardness requirement of a different pin standard without supporting product documentation.

What is a dowel pin used for?

A dowel pin is primarily used to accurately locate and align two or more components. It helps ensure that components return to the same position after assembly or dismantling and can also help resist lateral movement between correctly fitted components.

What does 2 x 8mm mean?

The 2mm refers to the nominal diameter of the dowel pin and the 8mm refers to its overall length.

What material is this dowel pin made from?

This dowel pin is manufactured from A1 stainless steel. A1 stainless steel provides corrosion resistance and is commonly used for suitable engineering and mechanical applications where stainless steel is required.

What is DIN 7?

DIN 7 is a dimensional standard for parallel dowel pins. The standard covers cylindrical pins used for accurate positioning and alignment, with defined dimensional and tolerance requirements. DIN 7 has been superseded by ISO 2338 in current standardisation. :chatgpt-content-reference{index="2"}

What is the difference between a dowel pin and a normal pin?

Dowel pins are manufactured to controlled dimensions and tolerances specifically for accurate positioning and alignment. They are normally used in accurately prepared holes, whereas general-purpose pins may be intended for less precise retaining or locating applications.

Do dowel pins need a specially sized hole?

Yes. The hole should be produced to the correct diameter and tolerance for the required fit. For precision locating applications, the hole will normally need to be accurately drilled and reamed. The required fit should be confirmed from the engineering drawing or application specification before installation.

Can this dowel pin be used outdoors?

A1 stainless steel provides corrosion resistance for many indoor and suitably controlled external environments. The suitability of the material should be assessed against the level of moisture, chemicals and environmental exposure expected in the application.

Can a dowel pin be used to hold components together?

Dowel pins are primarily intended for accurate location and alignment rather than clamping components together. Bolts, screws or other suitable fasteners are normally used to provide the required clamping force, with the dowel pin providing accurate positioning.

Can dowel pins be removed and reused?

Dowel pins can sometimes be reused if they remain undamaged and retain the required dimensions and surface condition. However, the condition of both the pin and the mating holes should be checked before reuse, particularly where a precision fit is required.