Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Standard |
DIN 7979:1977 |
|
Design Types |
Type C / Type D |
|
Nominal Diameter |
6–80 mm |
|
Diameter Tolerance |
m6 (standard table) |
|
Internal Thread |
M4–M42, depending on nominal diameter |
|
Type C Material |
9SMnPb28K, according to DIN 1651 |
|
Type D Material |
Steel, tensile strength ≥ 600 N/mm² |
|
Type D Heat Treatment |
Quenched |
|
Type D Hardness |
60 ± 2 HRC |
|
Surface Roughness |
Rz 4 |
|
General Dimensional Tolerances |
DIN 7168, Class C, for dimensions without specified tolerances |
|
Customization |
Other materials and tolerance zones by agreement |
Internal Thread Design & Easy Removal
Threaded Extraction Point: The internal thread provides an engagement point for a compatible removal screw or extraction tool, making it easier to withdraw the pin when servicing equipment.
Reduced Disassembly Damage: Using a suitable extraction method can help minimize damage to surrounding components compared with uncontrolled removal techniques.
Precision Component Positioning: The cylindrical pin body supports accurate alignment and positioning of mating parts when the pin diameter and hole fit are correctly specified.
Maintenance-Friendly Design: The internal thread is useful in fixtures, tooling, and machine assemblies where locating pins may need to be removed for replacement, adjustment, or component servicing.
Material, Hardness & Wear Resistance
| Parameter | Type C | Type D |
|---|---|---|
| Material | 9SMnPb28K steel, according to DIN 1651 | Steel, according to DIN 7979 requirements |
| Heat Treatment | Unhardened | Hardened |
| Minimum Tensile Strength | According to applicable material specification | 600 N/mm² |
| Hardness | No specific hardness value stated in the supplied standard | 60 ± 2 HRC |
| Wear Resistance | Suitable for applications consistent with its specified material condition | Hardened condition supports improved resistance to surface wear |
| Typical Selection Consideration | Applications requiring precision positioning without the specified hardened condition | Applications requiring higher hardness and wear resistance |
| Material Verification | Confirm steel grade and applicable material requirements | Confirm material, heat treatment, and hardness requirements |
- Precision Manufacturing to DIN Standards
Anhui Pins supplies DIN 7979 parallel pins with internal thread according to applicable dimensional and technical requirements. We help OEM manufacturers and industrial buyers confirm pin diameters, length tolerances, internal thread specifications, and pin types to meet specific assembly requirements.
- Customized Solutions for OEM Buyers
We support customized parallel pin requirements based on customer drawings and technical specifications. Material selection, heat treatment, hardness requirements, and dimensional details can be reviewed according to the intended application, helping machinery manufacturers and engineering buyers find suitable locating pin solutions.
- Bulk Supply for Industrial Procurement
As a supplier serving B2B purchasing needs, Anhui Pins supports bulk orders for fastener distributors, machinery manufacturers, and industrial equipment companies. Specification confirmation, agreed inspection requirements, and packaging coordination help support repeat orders and consistent procurement processes.
Custom Internally Threaded Solid Dowel Pins
Anhui Pins supports OEM manufacturers, machinery builders, and industrial fastener distributors with parallel pins manufactured according to applicable DIN 7979 requirements and agreed technical specifications.
- Diameter and Length Requirements: Buyers can specify the required nominal diameter and pin length according to assembly drawings, installation space, and positioning requirements.
- Material and Hardness Selection: Type C and Type D designs have different material and hardness requirements. Buyers can identify the required type and confirm any project-specific material requirements before production.
- Internal Thread Specifications: Internal thread size and depth should correspond to the applicable standard dimensions or approved customer drawings. Special requirements are subject to technical review.
Our Customers & Cooperation
Quality Control
Anhui Pins understands the importance of dimensional accuracy and consistent product specifications for industrial fastening and precision locating applications. Our quality control requirements can be aligned with applicable DIN 7979 specifications and customer drawings to support the needs of OEM manufacturers, machinery builders, and industrial fastener distributors.
FAQ
What is the difference between a parallel pin with an internal thread and a standard parallel pin?
A standard parallel pin has a solid cylindrical body without an internal extraction thread. A parallel pin with an internal thread includes a threaded hole at one end, allowing a suitable tool to engage with the pin during removal. The threaded design is particularly useful in precision assemblies that require periodic maintenance or disassembly.
What hole fit should be considered when selecting a DIN 7979 parallel pin?
The required hole fit depends on the pin's specified diameter tolerance and the assembly's positioning requirements. DIN 7979 pins are commonly specified with an m6 diameter tolerance, but the mating hole should be designed according to the engineering drawing and required fit. Buyers should confirm both pin and hole tolerances before ordering.
Is the internal thread designed to fasten components with a screw?
The internal thread is primarily intended to facilitate pin extraction rather than serve as the main fastening connection. The cylindrical body provides the locating function, while the internal thread provides a point for engaging a removal tool. A separate screw fastening system should be specified if the assembly requires threaded clamping.
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