Spring Snap Hooks and Quick Links
EGG Type Snap Hook|DIN 5299 B Pear Shaped Spring Hook Carabiners
A pear-shaped spring-loaded snap hook compliant with DIN 5299 B, designed for quick, secure connections in rigging and load control systems. Available in sizes from 5x50 to 12x140, with working load limits from 100 lbs to 600 lbs. The hook features a spring mechanism that allows one-handed operation and a secure closure under load. Made from high-quality carbon steel, stainless steel 316/304, aluminum alloy, or zinc alloy, it connects ropes, cables, or components without requiring tools. Standard 4:1 design factor
- Size
- 5x50 to 12x140
- Catalogue Family
- Spring Snap Hooks and Quick Links
- Certificates
- EN 10204 3.1 material test certificate on request
CAD files are supplied on request via WhatsApp or email rather than published for open download.
Key Benefits
What Pear Shaped Spring Hook Gives You
- Spring-loaded closure allows one-handed operation for fast connection and disconnection in field use
- Pear-shaped design provides a secure grip and prevents accidental opening under load
- Complies with DIN 5299 B standard for consistent performance and interchangeability
- Available in multiple materials including stainless steel 316/304 for corrosion resistance
- Working load limit stamped on the body for traceability and safety verification
- Standard 4:1 design factor ensures reliable safety margin across all sizes
- Compact form factor reduces bulk in rigging systems and toolkits
Application Scenarios
Where Pear Shaped Spring Hook Is Used
- Connecting synthetic webbing slings to lifting points on a crane or hoist
- Securing tie-down straps or ratchet straps on trailers and transport vehicles
- Attaching wire rope or chain to a load or anchor point during lifting operations
- Quickly joining components in temporary rigging setups on construction sites
- Mounting safety lines or fall arrest systems in industrial work zones
- Connecting mooring lines to bollards or cleats on marine vessels
- Integrating into winch systems for load anchoring and line attachment
Who It Is For
Buyers This Product Is Built For
- Rigging contractors sourcing standardized connection hardware for lifting and transport
- Logistics and freight operators specifying reliable snap hooks for cargo securing
- Marine and offshore crews needing corrosion-resistant hooks for mooring and anchoring
- Construction teams requiring quick-connect fittings for temporary lifting and bracing
- Industrial maintenance teams using snap hooks in safety and equipment handling
- Manufacturers of rigging kits and toolboxes who need a consistent, compliant hook
- Export buyers consolidating multiple rigging components from one supplier
Problems It Solves
Problems This Product Removes
- Accidental disengagement of connection points due to loose or unsecured hooks
- Need for multiple tools to connect or disconnect rigging components in the field
- Inconsistent performance from non-standard or unmarked snap hooks
- Corrosion damage in wet or salty environments due to poor material choice
- Lack of traceability and safety certification on small hardware items
- Sourcing snap hooks from multiple suppliers for different materials or sizes
- Inadequate design factor or unclear working load limits leading to overloading
Technical Features
Technical Features
- Pear-shaped body with spring-loaded gate for quick, secure engagement
- Compliant with DIN 5299 B standard for dimensional and performance consistency
- Spring mechanism ensures automatic closure and positive locking under load
- Working load limit stamped on the body for field verification
- Standard 4:1 design factor unless otherwise specified
- Available in carbon steel, stainless steel 316/304, aluminum alloy, and zinc alloy
- Threaded or smooth body finish depending on material and application
Specifications
Pear Shaped Spring Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Size Range | 5×50 to 12×140 mm |
|---|---|
| Working Load Limit | 100 lbs to 600 lbs |
| Material | High-quality carbon steel, stainless steel 316/304, aluminum alloy, zinc alloy |
| Standard | DIN 5299 B |
| Surface Finish | Standard black oxide or galvanized; custom finishes available |
| 5×50 Dimensions | ΦA 5 mm, B 25 mm, C 50 mm, F 7 mm |
| 6×60 Dimensions | ΦA 6 mm, B 30 mm, C 60 mm, F 8 mm |
| 12×140 Dimensions | ΦA 12 mm, B 67 mm, C 140 mm, F 19 mm |
Materials
Materials And Finishes
- High-quality carbon steel for standard strength and durability
- Stainless steel 316/304 for marine and high-corrosion environments
- Aluminum alloy for lightweight applications where strength is secondary
- Zinc alloy for cost-effective, low-weight snap hooks with moderate load capacity
- Black oxide or galvanized finish for surface protection and wear resistance
Manufacturing Process
How This Product Is Made
1Cold forming of the hook blank from raw material
2Heat treatment to achieve required tensile strength and spring resilience
3Machining of the gate spring and body contours
4Assembly of the spring mechanism and gate closure
5Surface treatment including galvanizing, black oxide, or powder coating
6Stamping of working load limit and material marking on the body
7Proof load testing and dimensional inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load testing on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Gate spring function test to ensure full closure and resistance to opening
- Material Test Certificate to EN 10204 3.1 issued with order on request
- Third-party inspection accepted at warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the body for specific load ratings
- Private label and OEM marking for brand-specific packaging
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom sizes and configurations built to a supplied drawing
- Packing carton and pallet configuration tailored to warehouse or retail needs
Compare
How It Compares With The Alternatives
An honest read on where this pattern wins and where another one would serve you better.
| Alternative | Honest Trade Off |
|---|---|
| Screw Pin Carabiner | The spring hook allows one-handed operation and faster connection, but a screw pin offers higher security and is less prone to accidental opening under dynamic loads |
| Rigid Link Hook | The spring mechanism provides faster engagement, but a rigid link has no moving parts and is more durable in high-abrasion environments |
| Zinc Alloy Hook | The spring hook is stronger and more durable than a zinc alloy hook, but zinc alloy is lighter and less expensive for low-load applications |
| Aluminum Alloy Hook | The spring hook offers better load retention and gate security, but aluminum is lighter and suitable for non-critical, low-load tasks |
Use Guide
How To Use And Inspect Pear Shaped Spring Hook
- Verify the stamped working load limit matches the expected load, not the equipment rating
- Ensure the gate closes fully and the spring mechanism operates smoothly before use
- Inspect for deformation, gate misalignment, or wear on the hook tip before each use
- Avoid side loading the hook; keep the load aligned with the spine of the hook
- Do not use if the spring is weak, the gate does not close, or the marking is illegible
- Retire the hook if it shows signs of fatigue, corrosion, or mechanical failure
- Store in a dry, clean area to prevent contamination and surface degradation
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Sourcing Support For This Product
Answers
Pear Shaped Spring Hook FAQ
What standard does this snap hook follow?
It complies with DIN 5299 B, ensuring dimensional consistency and performance across international applications.
What materials are available?
Available in high-quality carbon steel, stainless steel 316/304, aluminum alloy, and zinc alloy.
Is the working load limit stamped on the hook?
Yes, the safe working load limit is stamped on the body for traceability and field verification.
What is the design factor?
A standard 4:1 design factor applies unless otherwise specified, meaning the minimum breaking load is four times the safe working load.
Can you provide a Material Test Certificate?
Yes, a Material Test Certificate to EN 10204 3.1 is supplied on request with every order.
Can you customize the stamping or finish?
Yes, custom tonnage stamping, private label marking, and surface finishes like zinc plating, powder coating, or electrophoretic black are available.
How are they packed for export?
Standard cartons on pallets; we can configure packing to match your warehouse or retail requirements. Free storage in Qingdao for up to two months is available for shipment consolidation.
Need A Quote On Pear Shaped Spring Hook
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