Shackle
US Type Screw Pin Shackle
High strength US type screw pin shackle with a bow and pin in high tensile steel grade 6, hot dipped galvanised with a...
Shackle
US Type Screw Pin Shackle
High strength US type screw pin shackle with a bow and pin in high tensile steel grade 6, hot dipped galvanised with a yellow painted pin.
- Material
- Bow and pin in high tensile steel, grade 6
- Safety factor
- Minimum breaking load equals 6 times the WLL
- Standard
- Similar to US Fed. Spec. RR-C-271
- Surface
- Hot dipped galvanised, pin painted yellow
- Marking
- Forged usable load and nominal size
- Minimum order quantity
- 100 to 200 pieces per size
Full specification, standards and testing detail below. CAD files are available on request via WhatsApp.
Product Overview
What The US Type Screw Pin Shackle Is
The screw pin shackle is the fastest connection in the rigging box. The pin threads directly into the bow, so a sling can be connected and disconnected in seconds without loose parts to drop.
That speed makes it the right choice for temporary connections that are made and broken repeatedly during a job. Where the connection is permanent, or where the pin could rotate under a moving load, a bolt and nut shackle is the correct choice.
Key Benefits
Why Buyers Choose This Product
Six To One Breaking Reserve
Minimum breaking load is six times the working load limit, which is the reserve European and US specifiers expect on a shackle.
Hot Dipped Galvanised
Hot dipped galvanising with a yellow painted pin gives outdoor corrosion protection and makes the pin easy to identify.
Marked At The Forge
The usable load and the nominal size are forged into the body, so the marking cannot wear off in service.
Certificates On Request
Material and test certificates are available when they are requested at the time of order.
Application Scenarios
Where It Is Used And Who It Is For
Application Scenarios
- Connection of slings to lifting points and lifting beams
- Chain and wire rope sling assembly
- Rigging on construction and marine sites
- Load suspension equipment and hoist connections
- Towing and recovery
Who It Is For
- Rigging houses and sling assemblers
- Construction and marine contractors
- Distributors of rigging hardware
- Project buyers assembling lifting sets
Problems It Solves
The Sourcing Problems This Product Removes
Shackle markings wear off in service
Solution. The usable load and the nominal size are forged into the body rather than stamped or printed.
Shackles corrode on outdoor and marine sites
Solution. Hot dipped galvanising over the body with a yellow painted pin gives outdoor protection and keeps the pin visible.
Traceability is required by the end client
Solution. Material certificate and test certificate are available when requested at the time of order.
Technical Features
Construction Standards And Specification
- Material: bow and pin in high tensile steel, grade 6
- Safety factor: minimum breaking load equals six times the working load limit
- Standard: similar to US Fed. Spec. RR-C-271
- Surface: hot dipped galvanised, pin painted yellow
- Stamped or marked with the forged usable load and nominal size
- Material certificate and test certificate are available when requested at the time of order
- Material
- Bow and pin in high tensile steel, grade 6
- Safety factor
- Minimum breaking load equals 6 times the WLL
- Standard
- Similar to US Fed. Spec. RR-C-271
- Surface
- Hot dipped galvanised, pin painted yellow
- Marking
- Forged usable load and nominal size
- Minimum order quantity
- 100 to 200 pieces per size
- Lead time
- 30 days normally
Specifications
Working Load Limits And Dimensions
Materials And Manufacturing
Materials, Process And Quality Control
Materials
- High tensile steel grade 6 for the bow and the pin
- Hot dipped galvanised finish
- Yellow painted pin
Manufacturing Process
- Bow forging and normalising
- Pin machining and thread cutting
- Hot dipped galvanising
- Pin painting and marking verification
- Sample proof testing and packing
Quality Control
- Material grade verified against the mill certificate
- Forged marking checked for size and usable load
- Galvanising thickness inspected
- Sample proof testing to the declared safety factor
- Dimension check against the specification sheet
Certifications And Customisation
What We Certify And What We Can Change
Certifications
- Manufactured to a standard similar to US Fed. Spec. RR-C-271
- Material certificate available on request at the time of order
- Test certificate available on request at the time of order
Customisation Options
- Size range to the order
- Alternative surface finish on request
- Marking to the customer requirement
Comparison
How It Compares With Other Products
| Screw pin shackle | Bolt and nut shackle | |
|---|---|---|
| Best for | Temporary connections that are changed often | Permanent connections |
| Pin retention | Screw thread | Bolt secured by a cotter pin |
| Risk of the pin unscrewing | Present if the pin can rotate | Eliminated by the cotter pin |
| Assembly time | Fast | Slower |
| Safety factor | 6:1 | 6:1 |
Use Guide
How To Use The US Type Screw Pin Shackle Safely
- Select the shackle so its working load limit is at or above the leg load, not the total load.
- Load the shackle in line with the bow. Side loading reduces the capacity significantly.
- Make sure the pin is fully engaged and, on a bolt type, that the cotter pin is fitted.
- Never replace a shackle pin with a bolt of unknown grade.
- Withdraw any shackle with a bent bow, a stretched eye or a damaged thread.
FAQ
US Type Screw Pin Shackle FAQ
What safety factor do these shackles have?
The minimum breaking load is six times the working load limit.
Are certificates supplied?
Material certificates and test certificates are available when they are requested at the time of the order.
What is the minimum order quantity?
100 to 200 pieces per size, with a lead time of about 30 days.
Related Products
Shackle
US Type Bolt And Nut Shackle
High strength US type bolt and nut shackle recommended for permanent connections, for example with load suspension equ...
Thimble
Wire Rope Thimble
High quality wire rope thimble used at the end of a steel wire rope to hold the eye shape and protect the rope from cr...
Snatch block
Heavy Duty Snatch Pulley Block
LH type heavy duty single sheave snatch pulley block with rated loads from 2 MT to 50 MT, safety factor 4, tested at 2...
Keep Reading
Applications, Cases And Guides
Industry Applications
Next Step
Send Us The Sizes And We Will Quote
Tell us the working load limits, the lengths and the quantities you need and we will come back with a specification and a price. Drawings can be sent by WhatsApp or email.