The hamma brand is rapidly becoming recognised as a hallmark of quality for stainless steel snap shackles manufactured to withstand the rigours of modern-day yachting.
The hamma manufacturing facility is a state-of-the-art, modern factory located in Thailand with over 550 employees, including 60 highly skilled engineers who specialise in the design and production of marine tensile stainless steel solutions.
hamma stainless steel components are all produced under strict quality control procedures in accordance with ISO 9001:2008 quality control, complemented by ISO 17025 certification.
hamma Standard Snap Shackles are recognisable as the most commonly used type and shape fitted to the end of sheets, halyards and control lines on cruising yachts worldwide, but these have the reassurance of the hamma manufacturing brand with the corresponding manufacturer guaranteed load rating.
hamma Standard Snap Shackles are available in two versions:
hamma Standard Snap Shackle: Fixed Eye Orientation
- Sprung plunger pin for ergonomic opening, closing and locking
- Clevis ring on pin for attaching a pull lanyard
- Pulling on a lanyard makes the release easier when the snapshackle is under any tension
- Suitable for use on sheets, halyards and control lines
- Available in three sizes
- For halyards and other applications where shackle rotation is not desired or required
hamma Standard Snap Shackle: Swivel Head Eye
- Sprung plunger pin for ergonomic opening, closing and locking
- Clevis ring on pin for attaching a lanyard
- Pulling on a lanyard makes the release easier when the snapshackle is under any tension
- Suitable for use on sheets, halyards and control lines
- Available in four sizes
- For halyards and other applications where shackle rotation is desired, required or encouraged
hamma has directed immense energy and resources into reproducing the long-discontinued, but universally popular Norseman Gibb Navtec snap shackle designs.
The three original Navtec versions are now available from stock with the added reassurance of the impressive hamma 17.4 PH High resistance Stainless Steel Break Load Ratings:
hamma Side Opening 17.4 PH Snap Shackles: Facts, Features and Plus Factors
- Based on the Navtec Norseman Gibb (2572) design
- 17-4PH electro-polished high-strength stainless steel
- Side Opening version
- Swivel Head for full rotation
- Standard bail only
- Three sizes denoted by length overall: Size 1 64mm ~ Size 2 96.5mm ~ Size 3 124mm
- Suitable for all control lines, but primarily the optimum choice for a halyard shackle
hamma Top Opening 17.4 PH Snap Shackles: Facts, Features and Plus Factors
- Based on the Navtec Norseman Gibb (2522) shape and design
- 17-4PH electro-polished high tensile load stainless steel
- Top Opening
- Swivel Head for full rotation
- Standard and Large Bail options
- Simple plunger pin release with clevis ring for attaching pull lanyard
- Ergonomic snap closure
- Three sizes denoted by length overall: Size 1 64mm ~ Size 2 96.5mm ~ Size 3 124mm
- Top opening hinge prevents the snapshackle from getting hooked after release
- Top Opening hinge: Specifically designed with the opening arm hinged at the top of the shackle head rather than on the side, preventing the released arm from snagging on the line or clew you are trying to set free
- Suitable for sheets, guys and control lines, but not for halyards
hamma Triggerlatch Top Opening 17.4 PH Snap Shackles: Facts, Features and Plus Factors
- Based on the Navtec Norseman Gibb SuperSnap shape and design
- 17-4PH electro-polished high tensile strength stainless steel
- Top Opening
- Swivel Head for full rotation
- Standard and Large Bail options
- The trigger latch design facilitates the snapshackle to open under load by inserting a fid or spike into the release aperture, making foredeck crewing much easier and safer
- Trigger latch snapshackles are available in three sizes
- The spike release under load feature makes these snapshackles eminently suitable for spinnaker sheets and guys
- Ergonomic snap closure
- Top opening hinge prevents the snapshackle from getting hooked after release
- Top Opening hinge: Specifically designed with the opening arm hinged at the top of the shackle head rather than on the side, preventing the released arm from snagging on the line or clew you are trying to set free
- Suitable for high-load sheets, guys and control lines, but not for halyards
Why Splicing is Best Practice
Attaching a hamma snap shackle to the end of your lines with a professionally finished splice ensures you get the most from both components. The Jimmy Green Rigging Team champions splicing over tying a knot for several key benefits:
- Maximum Break Load Retention: A well-executed splice retains up to 100% of the line’s strength, whereas a knot can reduce the load capacity by 40% or more.
- Neat, Compact Finish: Splices are contoured and tapered, reducing the chance of snagging in blocks or jamming under load.
- Less Stress, Enhanced Durability: Splices distribute the tension more evenly, minimising pinpointed stress, thereby extending the working life of the line
- Enhanced Security: Professional splices are consistent and safe, reducing the chances of unexpected failure at sea.
For complete confidence in your rigging, especially in severe conditions, Jimmy Green Splicing is the smart, seamanlike solution.
The Jimmy Green Rigging Team can professionally finish all your lines for maximum efficiency and longevity onboard.
Back
