Screw Pin Shackles

Screw Pin Shackle Types

Screw Pin Anchor Shackles (Bow Shackles)

The anchor shackle has a wide, round bow body - the shape that gives it the nickname "bow shackle." That wider bow accepts multiple sling legs, basket hitches, and master link connections where a narrow body would pinch or side-load the pin. Screw pin anchor shackles are the most common shackle in general overhead rigging: connecting multi-leg chain slings to a load, attaching a wire rope sling to a hook, or building a pick point on steel for a crane lift. The G-209 (Crosby) and the Green Pin bow shackle line are the standard representatives of this body type.

Screw Pin Chain Shackles (Dee Shackles)

Chain shackles have a narrow, D-shaped body designed for in-line loads - connections where the load travels straight through the shackle along the pin axis. They're the natural match for chain-to-chain connections, wire rope end fittings, and rigging configurations where a compact body is needed and the load is in a single direction. Screw pin dee shackles appear frequently in load securement and tiedown work where rigging lines up in a straight pull.

Screw Pin vs. Bolt-Type Shackles

The body geometry on a screw pin shackle and a bolt-type shackle can be identical - same bow, same dee, same WLL rating at a given size. The difference is the pin. On a bolt-type shackle, the bolt passes through both lugs and is secured with a nut and cotter pin, locking the pin against rotation under load. This is the assembly typically specified when the connection remains under load for extended periods, when the load shifts direction and could unscrew the pin, or when the rigging stays in place between shifts.

Screw pin shackles are the standard choice for frequent removal: day lifts, temporary rigging, load securement, and other applications where the pin is turned by hand to assemble and break down connections. Industry practice generally indicates that screw pins are oriented with the pin threaded against the direction of load rotation where possible - manufacturer documentation for the specific shackle provides guidance on orientation.

ASME B30.26 addresses rigging hardware including shackles - covering design, marking, inspection, and removal from service. Manufacturer documentation for Crosby and Green Pin shackles provides the specific WLL, proof load, and minimum breaking strength (MBS) values for each model and size. WLL, proof load, and MBS are not the same number - manufacturer catalogs carry all three for reference.

Size and Capacity Range

Holloway Houston stocks screw pin shackles across a range of sizes covering light-to-heavy rigging applications. Green Pin screw pin shackles (263 SKUs in Wave 1) span multiple sizes in both the bow and dee body lines. Crosby screw pin anchor shackles are available in the G-209 family; confirm current stocking sizes with our team.

Green Pin uses a color-coded pin system across their shackle line - pin color corresponds to WLL grade, giving the rigger a quick visual reference in the field. The specific WLL for each size and configuration is carried on the product page for each shackle model.

Working load limit, proof load, and minimum breaking strength values for specific models and sizes are listed on individual product pages and in OEM catalog documentation. No universal size-to-WLL table applies across manufacturers and configurations - the product page for each SKU carries the correct load data.

Brands We Carry

Holloway Houston is an authorized distributor for Green Pin and Crosby in the screw pin shackle category.

Green Pin (Van Beest) is the primary screw pin shackle line at Holloway Houston. The Green Pin catalog covers both bow and dee body types in screw pin configurations, with 263 SKUs now fully described and available. Green Pin shackles are manufactured to ASME B30.26 requirements and carry WLL, proof load, and MBS markings. The color-coded pin system makes WLL grade identification straightforward in the field.

Crosby screw pin anchor shackles - primarily the G-209 family - round out the catalog for buyers who specify Crosby by name. Crosby has manufactured rigging hardware for more than 150 years, and the G-209 anchor shackle is one of the most recognized pieces of rigging hardware in North American lifting work. Stocking confirmation for specific Crosby sizes is available from our team.

This section is organized to expand as additional brands are added to the Holloway Houston shackle catalog.

Common Applications

Screw pin shackles appear across the rigging and lifting work Holloway Houston's customers do daily.

In overhead lifting, screw pin anchor shackles connect multi-leg chain slings and wire rope slings to structural steel, fabricated components, and process equipment. The wide bow accepts multiple sling legs without binding the pin. In crane work, screw pins handle connections at the hook end and the load end on lifts where the rigging changes from pick to pick.

In load securement and tiedown, screw pin chain shackles link tie-down chains to anchor points, trailer D-rings, and load binders - anywhere a compact in-line connector is needed that goes on and comes off with each load.

In rigging assembly and general industrial work, screw pin shackles connect slings to master links, master links to hooks, and rigging components throughout the assembly. The hand-removal feature keeps the rigging crew moving.

Holloway Houston also provides rigging inspection services for shackles and lifting hardware - a resource for operations that need documented inspection as part of their rigging management program.

Why Holloway Houston for Screw Pin Shackles

Holloway Houston has been in the rigging and lifting business since 1960 - 65 years of stocking and supplying the hardware that industrial, construction, and energy customers need in Houston and nationally. ISO 9001 certified. 250+ employees.

The screw pin shackle catalog at Holloway Houston covers Green Pin and Crosby lines with broad size ranges in stock and ready to ship from our Houston location. For operations that run B2B accounts, we offer volume pricing and account management for ongoing shackle supply.

Rigging inspection services are available for shackles and lifting hardware. For operations managing a rigging inventory that includes periodic inspection and documentation, our inspection program addresses shackles and other rigging hardware consistent with ASME B30.26 requirements. Ask our team about inspection services when you call.

Holloway Houston also stocks the chain slings, wire rope slings, and hooks that connect to the shackles - a full rigging assembly from one stocking location.

Shop by Product Type

• Green Pin Screw Pin Anchor Shackles (Bow)
• Green Pin Screw Pin Chain Shackles (Dee)
• Crosby G-209 Screw Pin Anchor Shackles
• Screw Pin Shackles by Size Range

Complete Your Rigging Assembly

• Chain Slings, Multi-leg chain sling assemblies that connect to the load via screw pin anchor shackles.
• Wire Rope Slings, Wire rope sling ends connect to anchor shackles and hook assemblies.
• Shank Hooks, Hook connections above the shackle in crane and hoist rigging assemblies.
• Rigging Shackles (All Types), Bolt-type shackles and the full rigging shackle catalog.
• Green Pin Brand Page, Full Green Pin shackle and rigging hardware catalog.

Selection Considerations for Screw Pin Shackles

Screw pin shackles are chosen by body type, size, and WLL to match the connection geometry and load in the rigging assembly.

Body type determines the connection geometry. The bow (anchor) body accepts multi-leg sling connections and basket hitches. The dee (chain) body is the choice for in-line, single-direction connections - chain-to-chain links, wire rope end fittings, and load securement runs.

Size and WLL are specified from the OEM catalog for the shackle model. Green Pin and Crosby both carry WLL, proof load, and minimum breaking strength (MBS) in their published documentation. These three load values are not interchangeable - manufacturer documentation carries all three for the specific model and size.

For specific overhead lift applications, manufacturer documentation for the shackle model and qualified lift planning references are the appropriate resources.

Industry Standards for Rigging Shackles

Rigging shackles - including screw pin anchor and chain shackles - are covered by ASME B30.26 (Rigging Hardware). ASME B30.26 addresses the design, manufacture, marking, inspection, and removal from service of rigging hardware including shackles, rings, links, and blocks. It is the governing standard for shackle hardware in North American industrial rigging operations.

OSHA 29 CFR 1926.251 references rigging equipment requirements for construction sites, including shackles used in construction rigging.

All shackles stocked by Holloway Houston are marked per ASME B30.26 requirements - WLL, manufacturer identification, and size markings are visible on each shackle. Proof test documentation is available for shipments where project or site requirements call for it.

Industry inspection programs for shackles typically look for deformation, wear at pin and lug contact points, cracks or corrosion affecting load-bearing areas, and legibility of identification markings. Shackles showing damage or unreadable markings are generally removed from service pending evaluation. The Holloway Houston inspection services team addresses shackles and lifting hardware as part of our rigging inspection program.

DISCLAIMER

Screw pin shackles are load-bearing rigging hardware. Selection, inspection, and use call for training consistent with ASME B30.26 (Rigging Hardware) and applicable OSHA standards. The information on this page is provided for general product awareness and does not replace qualified engineering judgment, manufacturer documentation, or site-specific lift planning.