Wire Rope Clips: Types, Installation & Safety Standards | GMC General Metals

A single reversed wire rope clip can reduce termination strength by more than 40%. That is not a theoretical risk—it happens on job sites every day, and it is entirely preventable. Wire rope clips are among the most frequently used rigging components, yet they are also among the most frequently misused. Getting the selection and installation right is straightforward once you understand the mechanics behind each decision.

This guide covers everything from component anatomy and type selection to material choice, step-by-step installation, and the compliance requirements that govern their use in lifting and rigging applications.

What Are Wire Rope Clips and How Do They Work

A wire rope clip—also called a wire rope clamp or cable clamp—is a mechanical fastener used to form a secure termination at the end of a wire rope. The two primary applications are creating a load-bearing eye loop and joining two wire rope ends together in a lap splice.

Every standard wire rope clip is built from three components:

• U-bolt: The curved bolt that wraps around the dead end (the short tail) of the wire rope.
• Saddle: The base plate that bears against the live end (the load-carrying side) of the rope.
• Nuts: Two nuts that draw the U-bolt and saddle together, compressing the rope and generating the clamping force.

When installed correctly, wire rope clips retain 80–90% of the wire rope's rated breaking strength, depending on rope diameter and the number of clips used. This makes them a practical field-installable termination—no swaging equipment required. However, they are not interchangeable with permanent swaged terminations and should not be used to fabricate wire rope slings, as specified under ASME B30.9.

Types of Wire Rope Clips: Which One Do You Need

The most important decision is between drop forged and malleable construction. These are not interchangeable—each is rated for a specific class of application.

Beyond the forged vs. malleable distinction, clips also differ in saddle design:

• U-Bolt clips (single saddle): The most common type. Orientation matters—the saddle must face the live end. Available as US type (Federal Spec FF-C-450D) and European DIN standards.
• Double saddle clips (fist grip): Feature two saddles instead of one saddle and a U-bolt. Orientation is non-critical, which reduces installation error. Efficiency is equivalent to U-bolt clips when correctly torqued.

Standard designations you will encounter in procurement:

• US Type / G450: Drop forged, meets Federal Spec FF-C-450D Type I Class 1. The benchmark for heavy-duty North American rigging.
• DIN 741: European malleable iron standard, light-duty use only.
• DIN 1142: European standard for drop forged clips; comparable application scope to US Type G450.

Our drop forged and malleable wire rope clips for lifting and rigging cover the full range of these designations and are available in sizes to match standard wire rope diameters.

Choosing the Right Material: Galvanized vs. Stainless Steel

Material selection should follow the operating environment of the wire rope itself. A clip in the wrong material will either corrode prematurely or represent unnecessary cost.

An important matching rule: the clip material should align with the wire rope surface treatment. Pairing a galvanized clip with a stainless steel wire rope, or vice versa, can introduce galvanic corrosion at the contact points over time. For saltwater or chemically aggressive environments, 316-grade stainless steel clips paired with our galvanized and high-tensile steel wire rope or stainless wire rope is the standard recommendation.

Clip size must always match the nominal diameter of the wire rope exactly. A clip that is even one size too large will not generate adequate clamping force, and the assembly will slip under load.

How to Install Wire Rope Clips: Step-by-Step

There is a well-known rule in rigging that captures the single most important installation principle: "Never saddle a dead horse." The saddle always goes on the live end (the load-bearing run of rope). The U-bolt always contacts the dead end (the short tail). Reversing this orientation is the most common and most consequential installation error.

1. Inspect both the wire rope and the clips. Check the rope for broken wires, kinks, crushed strands, or corrosion. Check each clip for cracked saddles, damaged threads, or bent U-bolts. Do not mix clips from different manufacturers in one assembly.
2. Seize the rope end. Tape or wire-seize the cut end to prevent strand unraveling before forming the eye.
3. Determine the required turnback length. This is the length of rope running from the base of the eye to the dead end. For a 1/4" rope, typical turnback is around 4–1/2". Consult the clip manufacturer's table for your rope diameter—turnback length is diameter-specific.
4. Form the eye and apply the first clip. Place the first clip as close to the thimble or end fitting as possible. Saddle on the live end. U-bolt on the dead end. Hand-tighten the nuts evenly.
5. Apply additional clips at equal spacing. Clips should be spaced at intervals of approximately 6 times the wire rope diameter. For most applications, a minimum of 3 clips is required; larger rope diameters may require more.
6. Torque all nuts to the manufacturer's specification. Tighten both nuts on each clip evenly, alternating to prevent cocking the saddle. Do not apply lubricant to threads unless specified—torque values are based on dry, clean threads.
7. Apply an initial proof load, then re-torque. Load the assembly to at least the working load, then unload and re-inspect. Wire rope compresses slightly under initial tension, which reduces nut torque. Re-tighten to the specified value after this first load cycle.

For complete termination assemblies including thimbles, hooks, and shackles to pair with your clips, see our wire rope fittings including thimbles, hooks, and shackles.

Compliance and Safety Standards for Wire Rope Clips

Two standards govern wire rope clip use in most professional and regulated environments in North America.

ASME B30.26 is the primary rigging hardware safety standard published by the American Society of Mechanical Engineers. It covers the construction, installation, operation, inspection, and maintenance of wire rope clips as detachable rigging hardware. Key requirements include minimum number of clips per rope diameter, correct saddle orientation, and periodic re-inspection criteria. The ASME B30.26 rigging hardware safety standard is the authoritative reference for procurement specifications and job site compliance.

OSHA 29 CFR 1926.251 (Construction) incorporates wire rope clip requirements directly, referencing minimum clip counts, torque values, and the prohibition on applying wire rope clips to slings. For general industry, OSHA 29 CFR 1910.184 applies to sling use and reinforces the ASME guidance.

Two compliance points warrant particular attention:

• Wire rope clips shall not be used to fabricate slings. ASME B30.9 explicitly prohibits this because clips require periodic re-torquing to maintain efficiency—an adjustment requirement that is incompatible with sling use in dynamic lifting.
• Drop forged clips are required for overhead loads. Malleable iron clips do not meet the load capacity or safety factor requirements for any application involving suspension above ground level.

Our complete range of wire rope accessories is manufactured to meet ASME B30.26 and Federal Specification FF-C-450D requirements, with documentation available for procurement and compliance review.

Common Mistakes to Avoid When Using Wire Rope Clips

Most wire rope clip failures trace back to one of six recurring errors. None of them are difficult to avoid—they simply require knowing what to look for.

• Reversed saddle orientation. The "saddle a dead horse" error. Even one reversed clip in an assembly significantly reduces holding strength.
• Too few clips. Using fewer clips than the minimum specified for your rope diameter cuts directly into the 80–90% efficiency figure. The minimum is a floor, not a target—when in doubt, add one more.
• Skipping the re-torque after initial loading. Wire rope bedding under first load is predictable and unavoidable. If you do not re-torque after the first load cycle, you are operating with a loose assembly.
• Mixing clip manufacturers or types in one assembly. Saddle geometry, U-bolt radius, and thread specifications vary by manufacturer. Mixed assemblies create uneven clamping and unpredictable performance.
• Using malleable clips for overhead or dynamic loads. Malleable iron is for handrails and fencing. Any overhead, suspended, or dynamically loaded application requires drop forged construction.
• Using clips to make slings. This is a compliance violation under ASME B30.9, not merely a best-practice recommendation. Wire rope slings require permanent terminations—swaged ferrules, spelter sockets, or properly rated end fittings.