Yoke Wire Rope Sockets
A wire rope socket is how a wire rope run becomes a load-rated termination. Spelter sockets, filled with zinc or resin, develop close to 100% of the wire rope's break strength at the termination. Wedge sockets provide a field-adjustable termination without special filling compounds.
About Yoke Wire Rope Sockets
Yoke manufactures wire rope sockets in forged alloy steel to match common rope diameters used in crane and rigging applications. Holloway Houston stocks the Yoke socket line, open and closed configurations, for rope diameters from 1/4 inch through 2-1/2 inch.
Wire rope sockets are the termination hardware at the end of a wire rope run, the fitting that translates the tensile strength of the rope into a connection point for a shackle, crane hook, or structural connection. The type of socket and the method of installation determine how much of the rope's break strength the termination captures.
Yoke sockets are forged from alloy steel to handle the point loads and fatigue cycling that wire rope terminations see in crane and rigging service. Each socket is marked with the rope diameter it fits and the manufacturer identification per ASME B30.26 marking requirements.
ASME B30.26 (Rigging Hardware) covers sockets as rigging hardware components. The standard addresses design, marking, and inspection requirements for wire rope sockets in load-handling service.
Types of Yoke Wire Rope Sockets
Open Spelter Sockets
Open spelter sockets have a clevis or jaw at the open end, allowing a pin connection to a shackle, structural lug, or other hardware. The rope is inserted into the basket, bent back (broomed), and the basket is filled with molten zinc or epoxy socketing compound. When set, the termination efficiency on a properly installed spelter socket is near 100% of the wire rope's catalog break strength. Open sockets are common in boom pendants, bridge crane hoist lines, and structural cable applications.
Closed Spelter Sockets
Closed spelter sockets have a fixed eye at the end instead of an open jaw. The eye connects directly to a pin or shackle without an intermediate clevis piece. Installation follows the same fill process as open sockets. Closed sockets are used where the connection point is fixed, structural cables, crane hoist rope terminations, and pendant lines.
Wedge Sockets
Wedge sockets provide a field-adjustable termination by clamping the rope between a socket body and a wedge insert. No filling compound is needed, the wedge is driven in under load tension to secure the rope. Wedge sockets are removable and reusable, making them the practical option for temporary installations and situations where the rope end requires periodic adjustment. Termination efficiency on a wedge socket is typically lower than a spelter installation; the manufacturer documentation specifies the WLL for each rope diameter and socket model.
Yoke Socket Rope Diameter Coverage
Rope diameters covered:
- 1/4 inch through 2-1/2 inch.
Socket styles:
- Open spelter.
- Closed spelter.
- Wedge (open).
Material:
- Forged alloy steel.
Marking per ASME B30.26:
- Rope diameter.
- Manufacturer ID.
- Lot number.
Termination efficiency:
- Spelter (zinc or resin fill): Near 100% of rope break strength when properly installed
- Wedge socket: Per manufacturer documentation for each size and rope lay and fiber type
Why Yoke for Wire Rope Sockets
Yoke's forged alloy body means the socket body maintains its geometry under the combined tensile and bending loads at a rope termination. ISO 9001 certification covers the forging and inspection process.
For crane service and rigging applications where the rope termination needs to match the rope's rated break strength, spelter socket installations with Yoke fittings give rope fabricators a reliable forged body to work with.
Holloway Houston offers rigging inspection services covering wire rope slings, terminations, and hardware per ASME B30.9 and applicable standards.
Shop by Product Type
Yoke Socket Applications by Industry
- Overhead Cranes : Bridge crane hoist rope terminations, boom pendants, and auxiliary hoist rope ends where high-efficiency spelter terminations are specified.
- Marine and Offshore : Crane hoist lines and structural stay cables on platforms and vessels where rope terminations take sustained and dynamic loading.
- Jobsite rigging : Boom pendants, guy wires, and temporary structural cable terminations on jobsite cranes and rigging setups.
- Mining : Winder rope terminations and hoist rope ends in shaft and surface mining equipment.
- Structural Cable : Suspension cables, stay cables, and architectural cable installations where spelter sockets provide the high-efficiency termination the design load requires.
Why Holloway Houston for Yoke Sockets
Holloway Houston stocks Yoke sockets alongside wire rope slings, shackles, and rigging hardware from Houston, over 65 years serving crane, offshore, and heavy industrial customers. Same-day shipping on in-stock rope diameter ranges.
For sockets in non-stock rope diameters or large-quantity orders, call our rigging team.
Related Wire Rope and Rigging Hardware
- Yoke Shackles : Connect wire rope socket terminations to load points and rigging hardware.
- Yoke Swivels : Add rotation capability at wire rope termination points on crane blocks and pendant lines.
- Yoke Master Links : Use master links above socket terminations in multi-leg rigging assemblies.
Wire Rope Socket Safety and Awareness
Wire rope sockets are covered under ASME B30.26 (Rigging Hardware) for design, marking, and inspection. Wire rope sling assemblies that terminate in sockets are also subject to ASME B30.9 (Slings) where applicable. OSHA 1910.184 applies to wire rope slings in general industry.
Key awareness points:
- Per ASME B30.26, sockets are marked with the rope diameter they are designed for. Using a socket on a rope diameter outside the marked range affects the termination geometry and the rated load path.
- Spelter socket installations, zinc or resin fill, require the rope to be properly broomed and degreased before pouring. Incomplete fill or improper brooming reduces termination efficiency below the catalog value.
- Wedge socket installations develop rated load only when the wedge is fully seated and the tail is secured per the manufacturer documentation.
- Sockets showing cracks, deformation at the basket, or elongation of the pin bore warrant removal from service and inspection before further use.
- Proof load records for socket-terminated rope assemblies are typically maintained for the service life of the assembly.
Frequently Asked Questions
A wire rope socket is the termination fitting at the end of a wire rope run. The rope is either embedded in the socket basket with a zinc or resin fill (spelter socket) or clamped between the socket body and a wedge insert (wedge socket). The socket translates the rope's tensile strength into a connection point, a pin eye, clevis jaw, or structural connection, for the load path.
A spelter socket uses zinc or resin poured around a broomed rope end inside the socket basket. When set, the termination approaches 100% of the rope's catalog break strength. A wedge socket uses a removable wedge clamped against the rope in the socket body, no filling compound is needed. Wedge sockets are field-adjustable and reusable, but their termination efficiency is lower than a properly installed spelter socket.
An open spelter socket has a clevis jaw at the end, allowing a pin connection to a shackle or structural lug. A closed spelter socket has a fixed eye for direct connection to a pin. Open sockets are common where the termination connects to a removable pin or shackle. Closed sockets are typical for structural cable and fixed-pin connections.
Yoke wire rope sockets at Holloway Houston cover rope diameters from 1/4 inch through 2-1/2 inch across spelter and wedge socket styles. Holloway Houston can source sockets for larger rope diameters on request.
ASME B30.26 (Rigging Hardware) covers wire rope socket inspection in load-handling service. For wire rope sling assemblies, ASME B30.9 (Slings) governs assembly inspection. OSHA 1910.184 applies in general industry.
DISCLAIMER
Wire rope sockets are load-bearing termination hardware. Selection, installation, and inspection call for training consistent with applicable ASME standards, manufacturer documentation, and wire rope termination practices. The information on this page is provided for general product awareness only and does not replace qualified engineering judgment or site-specific procedures.