Heavy Duty Slotted Spring Pins are self-retaining, heavy-duty headless fasteners featuring a longitudinal slot that compresses during installation to provide strong, vibration-resistant locking and high shear strength in heavy machinery. As a trusted Slotted Spring Pins Manufacturer, Anhui Pins Metal supplies DIN/ISO standard pins and custom solutions tailored to your specific requirements.
| Parameter Item | Specification & Option Details |
| Manufacturing Standards | ISO 8752 (Heavy Duty / DIN 1481), ISO 13337 (Light Duty / DIN 7346) |
| Diameter Range (d) | Metric: 1.0 mm – 50.0 mm | Inch: 1/16" – 2" |
| Length Range (L) | 4.0 mm – 200.0 mm |
| Duty Rating | Heavy Duty (ISO 8752) & Light Duty (ISO 13337) |
| Material Options | Spring Steel (65Mn / 60Si2Mn), Stainless Steel (SUS 304, 316, 420) |
| Surface Hardness | HRC 44–51 (Spring Steel) |
| Surface Treatments | Plain Oiled, Black Oxide, Zinc Plated, Phosphated, Passivated |
| Customization Service | We offer custom manufacturing of slotted spring pins according to your specific requirements and drawings. |
- High-Strength Steel Materials
Carbon steel materials provide excellent mechanical strength and durability, making them suitable for applications requiring higher load capacity and repeated stress resistance.
- Natural Finish with Protective Lubricant
The natural finish combined with protective lubrication helps reduce friction during installation while providing basic protection against corrosion during storage and operation.
- Electroplating, Phosphating & Coating Options
Various surface treatments are available to meet different environmental requirements. Electroplating, phosphating, and other coating options improve corrosion resistance and surface durability. Hydrogen embrittlement relief is applied after plating or coating processes to help maintain mechanical reliability.
Quality Control & Manufacturing Capability
Material & Process Verification
Incoming materials are inspected before production to confirm material specifications and quality requirements. Manufacturing processes are controlled to ensure consistent spring characteristics, strength, and dimensional accuracy throughout production.
Dimensional & Performance Inspection
Critical dimensions, including diameter, length, and structural features, are verified using precision measuring equipment. Performance checks are conducted to ensure the pins meet required mechanical requirements for demanding applications.
Final Inspection & Batch Control
Before shipment, finished products undergo final quality checks to verify appearance, specifications, and overall consistency. Production records and inspection results help maintain traceability and reliable supply for long-term customer projects.
FAQ
When should a reinforced Heavy Duty Slotted Spring Pin design be selected?
A reinforced design is typically considered when an assembly requires higher load capacity, improved resistance to repeated stress, or more stable performance under demanding operating conditions.
How is this type of pin different from a standard spring pin?
The main difference is the structural design and performance capability. Heavy-duty versions are developed for applications where greater mechanical strength and longer service life are required.
What factors affect the service performance of a Heavy Duty Slotted Spring Pin?
Performance depends on several factors, including hole size, material compatibility, installation method, operating loads, and the surrounding working environment.
Can these pins be used in equipment exposed to vibration?
Yes. When properly selected and installed, they can provide reliable retention in assemblies where vibration, movement, or repeated loading are present.
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