Introduction
Spring-Loaded Locating Pin is a high-elasticity steel cylinder used for precision parts positioning and permanent vibration-proof fastening.
Key Features
Flexible Fit
The pin's outer diameter is intentionally 0.2–0.5mm larger than the hole; it compresses during entry to fill all gaps for a zero-shake fit.
High Strength
Heat-treated 40Cr steel (HRC 42–50) creates a solid core that withstands high-tonnage lateral shear without bending or breaking.
Anti-Fatigue Performance
High-carbon spring steel keeps its "memory"; it snaps back to its original width after removal, maintaining full grip tension for years.
Anti-Loosening Grip
Constant outward radial pressure creates powerful friction against the hole wall, locking the pin dead in place even under extreme machine vibration.
Parameters and Specifications
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Origin: Nantong, Jiangsu / Handan, Hebei |
Product performance: Locking pin |
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Scope of application: Mechanical industry |
Packaging specifications: Plastic bag/ paper box |
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Functional use: Used to position and fasten parts |
Material: 45 steel/ 40Cr/ Bearing steel |
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Implementation standard: GB |
Surface treatment: Black |
Application Scenarios
Automotive Assembly:
Fastening engine and chassis components.
Industrial Tooling:
Precision alignment of mold plates and fixtures.
Heavy Machinery:
Securing shafts and hubs under high vibration.
Customization Options 
Material:
Pin body and spring material (e.g., carbon steel, stainless steel).
Diameter & Length:
Overall size based on application requirements.
Tip Style:
Round, chamfered, flat, tapered, or custom shapes.
Spring Force:
Light, medium, or heavy load options.
Surface Treatment:
Zinc plating, black oxide, passivation, etc.
Mounting Type:
Threaded body, press-fit, flange type, or custom design.
Safety & Compliance
Safety Performance
Structural Integrity: Vacuum tempering prevents hydrogen embrittlement, ensuring no sudden snapping under peak stress.
Operational Safety: Precision 15° lead-in chamfers remove all burrs for smooth, hand-safe, and tool-friendly installation.
Standards Compliance
Technical Standard: Fully compliant with GB/T 879 and DIN 1481 industrial fastener specifications.
Material Grade: Uses only certified 45# / 40Cr steel with full heat-treatment traceability.
Global Reputation: Why Reliability Wins
Massive Capacity
Dual bases in Nantong and Handan ensure high-volume, uninterrupted supply for global projects.
Strict Quality Control
Every batch undergoes hardness and metallographic testing to ensure zero-defect material consistency.
Trusted Partnership
Long-term Tier-1 supplier to major automotive brands with a 99% on-time delivery record.
FAQ
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