Snatch Blocks
Snatch Block With Hook Single Oval Eye Marine Pulleys
A single sheave pulley block with swivel oval eye and hook, designed for directional force change and light mechanical advantage in rigging. Available in 5'' 3T and 6'' 5T sizes, it features a forged steel frame, a precision-machined sheave, and a swivel hook for dynamic load alignment. Used in marine, construction, and industrial lifting to redirect lines with minimal friction and high durability.
- Size
- 5'' 3T 6'' 5T
- Catalogue Family
- Snatch Blocks
- 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 Snatch Block with Hook Gives You
- Swivel hook allows load alignment in multiple directions without twisting the rope
- Single sheave design reduces line friction and enables smooth redirection under load
- Forged steel frame with precision-machined sheave resists deformation under repeated use
- Oval eye provides a secure attachment point with a 360-degree swivel for dynamic rigging
- Hook with safety latch prevents accidental disengagement during lifting or tensioning
- Compact size and lightweight design reduce bulk in recovery and rigging kits
- Suitable for both synthetic rope and steel wire rope up to the specified diameter
Application Scenarios
Where Snatch Block with Hook Is Used
- Marine deck operations where lines need to be redirected around cleats or bollards with changing angles
- Construction site hoisting where a single pulley redirects a load to a crane or winch
- Off-road recovery setups using a winch line redirected through a pulley to a tree anchor
- Temporary rigging in industrial maintenance where a line must be pulled at an angle
- Tensioning cables and guy wires on towers, poles, or temporary structures
- Fishing vessel operations for adjusting anchor lines or net haul systems
- Portable rigging setups where weight and space are limited but reliability is critical
Who It Is For
Buyers This Product Is Built For
- Marine and offshore contractors specifying pulley blocks for deck and mooring systems
- Construction firms sourcing compact pulleys for crane and hoist line redirection
- Recovery and towing equipment manufacturers building winch kits for trucks and trailers
- Industrial maintenance teams requiring durable pulleys for temporary lifting tasks
- Rigging distributors carrying a pulley range who need a reliable single-block option
- Fishing and aquaculture operators equipping vessels with line redirection hardware
- Logistics and transport companies managing load securing and tie-down systems
Problems It Solves
Problems This Product Removes
- Rope or cable dragging over sharp edges due to fixed direction of force in rigid setups
- Load misalignment causing rope twist and premature wear on synthetic or wire rope
- Need for multiple separate fittings to redirect and anchor a line in one operation
- Inadequate swivel motion in fixed pulleys leading to rope chafing and fatigue
- Lack of a compact, lightweight pulley that still handles moderate loads reliably
- Difficulty in aligning a hook with the pull direction during dynamic lifting or recovery
- Buying pulleys and hooks from separate suppliers, increasing order complexity and lead time
Technical Features
Technical Features
- Single sheave with precision-machined groove for smooth rope or cable passage
- Forged steel frame with swivel oval eye for 360-degree load alignment
- Swivel hook with safety latch to prevent accidental disengagement
- Designed for use with rope diameters 18–20 mm (3T) and 20–22 mm (5T)
- Working load limit stamped on the frame for traceability and field use
- Standard 4:1 design factor unless otherwise stated
- Surface finish: zinc plated or powder coated as standard, custom finishes available
Specifications
Snatch Block with Hook Specifications
Values published in the Kailipu catalogue for this item. Anything not listed is available on request.
| Capacity | 3T (5'') and 5T (6'') |
|---|---|
| Sheave Diameter | 5'' (3T) and 6'' (5T) |
| Rope Diameter Range | 18–20 mm (3T), 20–22 mm (5T) |
| Net Weight | 6.75 kg (3T), 11 kg (5T) |
| Frame Material | Forged steel |
| Hook Type | Swivel hook with safety latch |
| Eye Type | Swivel oval eye |
| Surface Finish | Zinc plated or powder coated standard |
Full size table on request. The catalogue publishes a full dimension and capacity table for this item. Ask on WhatsApp or by email and we will send it as a PDF.
Materials
Materials And Finishes
- Forged steel frame for high impact and fatigue resistance
- Precision-machined sheave with hardened surface to reduce wear
- Swivel hook made from heat-treated alloy steel with safety latch
- Zinc plating or powder coating applied for corrosion resistance in marine and outdoor environments
- Internal bearing or bushing for smooth rotation under load
Manufacturing Process
How This Product Is Made
1Forging of the frame and hook blanks
2Heat treatment and quenching for strength and durability
3Machining of the sheave groove and swivel eye
4Assembly of sheave and swivel hook with bearing or bushing
5Surface finishing by zinc plating or powder coating
6Working load limit stamping and marking
7Proof load testing and final inspection before packing
Quality Control
Quality Control On Every Batch
- Proof load test on production batches before release
- Dimensional tolerance check against published size table
- Breaking strength validation to confirm 4:1 design factor
- Free rotation and end float check on the sheave and swivel hook
- Material Test Certificate to EN 10204 3.1 issued with the order on request
- Third-party inspection accepted at the Qingdao warehouse before shipment
Customisation
Customisation Options
- Custom tonnage stamping on the frame
- Private label and OEM marking available
- Custom surface finish including zinc plating, powder coating, or electrophoretic black
- Custom rope diameter range built to a drawing
- Custom carton and pallet configuration for export or warehouse handling
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 |
|---|---|
| Fixed pulley with non-swivel eye | The swivel oval eye allows dynamic load alignment and prevents rope twist, but adds a moving part that requires inspection |
| Double sheave pulley | The single sheave offers less mechanical advantage but is lighter, more compact, and sufficient for directional change without added complexity |
| Rigid shackle with separate snatch block | The integrated hook and swivel eye reduce the number of components needed, but a separate block still offers larger sheave diameter and higher efficiency for heavy loads |
| Soft shackle | Steel pulley resists abrasion and high loads, while a soft shackle is lighter and floats but wears quickly under repeated stress |
Use Guide
How To Use And Inspect Snatch Block with Hook
- Match the stamped working load limit to the calculated line load, not the winch or hoist rating
- Ensure the rope runs in the sheave groove and does not contact the frame or edge
- Check the swivel hook rotates freely and the safety latch engages properly before use
- Inspect the sheave for wear, the frame for cracks, and the hook for deformation before each lift
- Avoid side loading the pulley; keep the pull aligned with the sheave axis
- Retire the pulley if the frame shows deformation, the sheave seizes, or the marking is illegible
Related Products
Often Ordered With This Item
Trawl Block With Eye Single Wheel
Mounting Block With Hook, Single HQGK
Mounting Block With Eye, Single With A Hinged Lid
Snatch Block with Shackle HDG/ RED Lifting Marine Pulleys
Heavy Duty Snatch Block With Shackle HDG/ RED Lifting Marine Pulleys
Single Sheave Pulley Block With Swivel Oval Eye
Pulley Block Double With Oval Eye B Type
Snatch Pulley Block Triple With Hook B Type
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Guides Worth Reading Before You Order
Answers
Snatch Block with Hook FAQ
What is the working load limit for the 5'' and 6'' sizes?
The 5'' size has a 3T safe working load, and the 6'' size has a 5T safe working load. Both carry a standard 4:1 design factor.
Can this pulley be used with synthetic rope?
Yes. It is suitable for synthetic rope up to 22 mm diameter, with the sheave groove designed to reduce wear and heat buildup.
Is the swivel hook safe under dynamic loads?
Yes. The swivel hook includes a safety latch and is made from heat-treated alloy steel to resist deformation under repeated or high-force pulls.
What certificates are provided with the order?
A Material Test Certificate to EN 10204 3.1 is supplied on request. Each batch undergoes proof load testing and dimensional inspection.
Can you customise the finish or marking?
Yes. Custom tonnage stamping, private label marking, and finishes such as zinc plating, powder coating, or electrophoretic black are available.
How are the pulleys packed for export?
Standard carton on pallet. We can configure carton count and pallet pattern to match your warehouse or retail pack. Free storage in Qingdao for up to two months is available.
What is the maximum rope diameter for each size?
The 5'' (3T) pulley fits rope from 18–20 mm. The 6'' (5T) pulley fits rope from 20–22 mm.
Need A Quote On Snatch Block with Hook
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We reply within 24 hours on WhatsApp or by email. Send a drawing, a photo or a bill of materials and we will quote it as it stands.