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Premium Spring Roll Pins & Precision Fasteners

ISO9001 Certified Manufacturer of High-Strength Spring Pins, Slotted Pins, Coiled Pins, Dowel Pins, and Industrial Washers. Engineered for Durability, Precision, and Corrosion Resistance.

Trusted Fastener Manufacturer Since 2011

Anhui Paiensi Metallic Products Co., Ltd, located in the scenic east of Anhui Province, China, has been a leading manufacturer of precision metal fasteners since 2011. We specialize in high-performance spring roll pins, slotted pins, coiled pins, dowel pins, and industrial washers for global industrial applications.

Our products are engineered to meet international standards including ISO, DIN, ASME, JIS, and ANSI. With strict quality control and advanced production technology, we deliver reliable, durable, and corrosion-resistant fastening solutions trusted by automotive, machinery, aerospace, and engineering sectors worldwide.

  • ISO9001 Certified Quality Management
  • OEM/ODM Customization Available
  • Exported to 50+ Countries
  • In-House R&D and Tooling
Coiled Spring Pin Slotted Spring Pin Disc Spring Washer Heavy Duty Spring Pin

Our Premium Products

High-precision, industrial-grade fasteners manufactured to ISO, DIN, ASME, and JIS standards. Available in carbon steel, stainless steel, and specialized alloys with various surface treatments.

Coiled Spring Pin

Coiled Spring Pin ISO 8752

DIN1481, Phosphate, 16mm x 50mm, 65Mn Carbon Steel

  • • High elasticity & fatigue resistance
  • • Black phosphated for corrosion protection
  • • Suitable for dynamic loads
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Slotted Spring Pin

Slotted Spring Pin ISO 8752

M10 x 40mm, 316 Stainless Steel, DIN1481

  • • Full compliance with ISO9001
  • • Excellent corrosion resistance
  • • Ideal for automotive applications
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Shim Ring Washer

Shim Ring Washer

12x18x0.2mm, Flat Axial Force Washer

  • • Precision thickness control
  • • Used for alignment and spacing
  • • Carbon steel with zinc coating
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Disc Spring Washer

Disc Spring Washer

M22, Zinc Dacromet, Standard Knurling

  • • High load capacity
  • • Prevents loosening under vibration
  • • DIN6796 compliant
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Parallel Dowel Pin

Parallel Dowel Pin ISO 2338

DIN 7, M8, Stainless Steel, Ground Finish

  • • Precision ground for tight fit
  • • Used in mechanical connections
  • • High shear strength
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Heavy Duty Spring Pin

Heavy Duty Spring Pin

M40 x 120mm, Elastic Cylinder Pin, ISO8752

  • • Extra-large diameter & length
  • • For high-stress industrial use
  • • Split design for easy installation
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Cylinder Slotted Pin

Cylinder Slotted Spring Pin

12mm x 28mm, 65Mn, Zinc Coated, Light Duty

  • • Cost-effective solution
  • • Suitable for light to medium loads
  • • ISO9001 certified production
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Elastic Cylindrical Pin

Elastic Cylindrical Pin

M4 x 16mm, Black Phosphated, ISO9001

  • • High resilience and recovery
  • • Uniform wall thickness
  • • Ideal for repeated assembly
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Serrated Conical Washer

Serrated Conical Washer

M18, Inconel, Belleville Type, Anti-Loosening

  • • High-temperature resistant material
  • • Prevents rotation and loosening
  • • Used in critical fastening systems
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Dowel Bushing

Dowel Bushing GD100

M10, Ground Hollow, Alignment Pin

  • • Precision alignment component
  • • Used in jigs and fixtures
  • • Hardened and ground for accuracy
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Roll Pin

Light Duty Roll Pin

3mm x 10mm, Black Spiral, DIN 7344

  • • Thin-walled for easy insertion
  • • Spiral cut for flexibility
  • • Common in electronics and light machinery
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Contact Lock Washer

Contact Lock Washer

SN 70093, M4, Stainless Steel, Zinc Coated

  • • JIS, DIN, ISO, ANSI compliant
  • • Prevents loosening from vibration
  • • Round serrated design
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Why Choose Us?

Reliable Quality, Global Standards, and Engineering Excellence

ISO9001 Certified

Rigorous quality control systems ensure every product meets international standards for performance and reliability.

Advanced Manufacturing

State-of-the-art production lines with CNC machining, cold forming, and precision grinding for consistent quality.

OEM/ODM Support

Custom design, tooling, and packaging solutions tailored to your specific engineering and branding requirements.

Global Export

Trusted by customers in over 50 countries with efficient logistics and multilingual support.

2011

Founded

50+

Countries Served

ISO9001

Quality Certified

1000+

Custom Designs

Frequently Asked Questions

What materials are your spring pins made from?

Our spring pins are manufactured from high-quality carbon steel (65Mn), stainless steel (304, 316, 18-8), and alloy steels. Material selection depends on application requirements including strength, corrosion resistance, and temperature.

Do you offer custom sizes and specifications?

Yes, we provide full OEM/ODM services. Our engineering team can develop custom spring pins, washers, and dowel pins to your exact drawings, dimensions, and performance requirements.

What surface treatments do you offer?

We offer black phosphating, zinc plating, Dacromet coating, passivation, and plain finishes. Surface treatments enhance corrosion resistance and appearance based on your application environment.

What standards do your products comply with?

Our products meet ISO, DIN, ASME, JIS, ANSI, and NFE standards including ISO 8752, DIN 1481, ISO 2338, DIN 7, and more. All products are manufactured under ISO9001 quality management system.

What is the minimum order quantity (MOQ)?

MOQ is negotiable based on product type, material, and customization. We accommodate both large industrial orders and smaller trial batches for evaluation.

Get in Touch

Contact our sales team for product inquiries, custom solutions, or technical support.

Email: [email protected]

Phone: 86--13966221556

Visit Official Website to Contact

For fastest response, please visit our official website and submit your inquiry directly.

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