Hardened steel dowel pins Specifications
| Parameter | Specification |
|---|---|
| Material | Hardened Steel |
| Diameter | Standard & Custom Sizes Available |
| Length | Standard & Custom Lengths Available |
| Hardness | Heat-Treated to Required Hardness |
| Tolerance | According to Standard or Customer Drawing |
| Surface Treatment | Natural Finish + Protective Lubrication / Phosphating / Other Coatings |
| Standards | ISO 8734 / ISO 2338 / ISO 8735 / DIN 6325 / DIN 7979 / DIN 7 |
| Packaging | Bulk / Box / Customized Packaging |




Hardened Steel & Heat Treatment
Hardened Steel Construction
Manufactured from hardened steel to provide the strength and surface hardness required for precision locating and mechanical assembly applications.
Controlled Heat Treatment
Heat treatment is applied to achieve the required hardness and mechanical properties, helping maintain reliable performance under repeated loading and assembly conditions.
Enhanced Wear Resistance
The hardened surface helps reduce wear caused by repeated insertion, contact, and component movement, supporting longer service life in demanding applications.
Stable Mechanical Performance
Controlled hardness and heat treatment help maintain consistent mechanical properties across production batches, supporting reliable fit and positioning performance.
Hardened steel dowel pins Quality Control & Inspection

Material Verification
Incoming steel materials are checked against specified material and production requirements before processing.

Hardness Verification
Heat-treated parts are tested to confirm hardness meets the required specification and remains consistent between batches.

Dimensional Inspection
Critical dimensions such as diameter, length, and tolerance are inspected to ensure consistent fit with mating components.

Final Quality Inspection
Finished parts undergo final inspection before shipment to verify dimensional consistency, surface condition, and overall product conformity.
Hardened steel dowel pins Manufacturing Process

Material Cutting
Steel material is cut to the required length according to production specifications, providing consistent blanks for subsequent processing.

Heat Treatment
The pin blanks undergo controlled heat treatment to achieve the required hardness and mechanical properties for demanding locating applications.

Precision Grinding
After heat treatment, the pins are precision ground to achieve the specified diameter, dimensional tolerance, and surface finish for accurate fitting.

Surface Treatment
The finished pins are treated according to application requirements, with options such as protective lubrication, phosphating, and other coatings available for enhanced surface protection.
FAQ
How do I select the correct dowel pin diameter?
The diameter should be selected according to the mating hole size, required fit, assembly method, and positioning requirements. Existing component drawings are recommended for accurate selection.
What fit should be used between the pin and the mating hole?
The required fit depends on whether the pin is intended for permanent positioning, removable assembly, or repeated maintenance. The hole tolerance should be considered together with the pin tolerance.
Can hardened dowel pins be used for repeated assembly?
Yes. They can be used in applications involving repeated assembly when the pin and mating hole are properly matched and the installation method is controlled.
Can you manufacture pins according to customer drawings?
Yes. Custom dimensions, tolerances, hardness requirements, and other technical specifications can be produced according to customer drawings or samples.
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