Towing a car is an operation that requires not only driving skills, but also reliable equipment. One of the key elements of the towing system is shakly (aka shackles, earrings or towing hooks), which provide a strong and quick-release connection between the cable and the towing eyes. Incorrect selection or installation of the shakla can lead to cable breakage, vehicle damage, or even an accident.

In this article we will look at what there are shackles for tow rope, what materials they are made from, how to choose a suitable model for the weight of your car and how to operate it correctly. We will pay special attention critical errors when fastening, which are made by 80% of drivers - this will help avoid typical breakdowns and fines for violating towing rules.

What is shakla and why is it needed?

A shackle is a metal clamp with a threaded pin or latch designed to connect a tow rope to the lugs on a vehicle. It performs three key functions:

  • 🔗 Quick connection/disconnection — allows you to quickly attach or remove the cable without tools.
  • 🔒 Reliable fixation — prevents spontaneous disconnection of the cable while driving.
  • 🛡️ Rope protection — evenly distributes the load, preventing chafing or breaking of the cable at the attachment point.

Without the shakla, the towing cable would have to be tied in knots, which is not only inconvenient, but also dangerous: the knots can come undone from vibration, and the cable itself can rub against the sharp edges of the eyelet. The traffic rules (clause 20.4 of the Russian Federation Traffic Regulations) clearly state that towing must be carried out using rigid hitch or flexible cable with reliable fastenings — the shakla is just such a fastening.

It is important to understand that the shakla is not a universal accessory. For example, a bracket for a passenger car weighing up to 2 tons is not suitable for towing an SUV or minibus. Using an unsuitable shackle may cause it to deform or break under load.

📊 What type of towing do you use most often?
Flexible cable
Rigid coupling
Tow truck
I don't tow

Types of shackles: what they are and how they differ

All shaklas are divided into two main types according to their design: screw (with threaded pin) and snap-on (with spring mechanism). Each type has its pros and cons, as well as recommendations for use.

1. Screw shackles

The most common option, consisting of an arc with a thread and a pin with a nut. Benefits:

  • ✅ High reliability - can withstand heavy loads (up to 10 tons or more).
  • ✅ Versatility - suitable for cables, chains and slings.
  • ✅ Durability - less wear and tear with frequent assembly/disassembly.

Disadvantages: they require tightening with a wrench (in field conditions this can be inconvenient) and over time the threads can “stick” from corrosion.

2. Snap shuttles

A special feature is a spring mechanism that locks the pin in the closed position. Pros:

  • ⚡ Quick fastening - no need to tighten the nut, just snap the bracket.
  • 🔄 Convenience in emergency situations (for example, on the highway).
  • 🛠️ Less susceptible to corrosion due to the lack of threads.

Cons: lower load capacity (usually up to 4.5–5 tons) and the risk of spontaneous opening due to strong vibration. Such shackles are often used for boats, trailers or light vehicles.

Shackles also differ in arc shape:

  • 🌐 D-shaped - classic option, suitable for most cables.
  • 🔵 Round (bow shackle) — used for repeated bending of the cable (for example, in maritime affairs).
  • ▫️ Rectangular — for specific fastenings (rarely used in automotive applications).
💡

D-shaped screw shackles are optimal for towing cars - they can withstand high loads and are securely fixed.

Manufacturing materials: which one to choose?

The material of the shakla determines its strength, weight and resistance to corrosion. Let's look at the main options:

Material Strength Corrosion resistance Weight Price Recommendations
Carbon steel ⭐⭐⭐⭐⭐ ⭐⭐ (needs anti-corrosion treatment) Heavy $$ For permanent use, e.g. on tow trucks
Stainless steel (AISI 304/316) ⭐⭐⭐⭐ ⭐⭐⭐⭐⭐ Medium $$$ Ideal for marine climates or trunk storage
Aluminum alloy ⭐⭐⭐ ⭐⭐⭐⭐ Lightweight $$$$ Only for light vehicles (up to 1.5 tons)
Galvanized steel ⭐⭐⭐⭐ ⭐⭐⭐⭐ Medium $ The best budget option for most drivers

For towing a car in standard conditions (city, highway), the best choice would be galvanized or stainless steel. Aluminum shackles are only suitable for motorcycles or ATVs. Uncoated carbon steel is only worth buying if you are willing to lubricate it regularly and store it in a dry place.

⚠️ Attention: Cheap shackles made of “raw” steel (without markings) can burst at a load exceeding 50% of the declared one. Check quality certificates - reliable models indicate the standard DIN 741 or GOST 2224-93.

How to choose a shakla based on load capacity?

The main parameter when choosing is workload (WLL, Working Load Limit), which is indicated on the body of the shakla. This is the maximum weight that the brace can support in normal mode (with a margin of safety). There is a simple rule for towing a car:

WLL shakla ≥ weight of towed vehicle × 2

Calculation examples:

  • 🚗 Passenger car (Ford Focus, weight 1.3 tons) → WLL ≥ 2.6 tons.
  • 🚙 Crossover (Toyota RAV4, weight 1.8 tons) → WLL ≥ 3.6 tons.
  • 🚐 Minibus (Gazelle Next, weight 2.8 tons) → WLL ≥ 5.6 tons.

Why do we multiply by 2? Because when towing there are dynamic loads (jerks, braking, turns), which may exceed the static weight of the vehicle. For example, with a sharp start, the load on the cable and shakla increases by 1.5–2 times.

Shaklas with WLL ranging from 0.5 to 10 tons are common on the market. For most passenger cars, a model with 3.2–4.75 tons (these are standard values for shuckle size 3/8" or 1/2"). For SUVs and minibuses, take the brackets to 6.5–8 tons.

What happens if you use a shakla with insufficient carrying capacity?

When the WLL is exceeded, the shakla metal is deformed: first the arc is stretched, then the pin bursts or the thread breaks. In the worst case scenario, the shackle breaks into pieces and the cable can injure people or damage machines. For example, when towing Kia Sportage (weight 1.7 tons) with a 2-ton shakla, the risk of breakage is ~30% already at the first sharp braking.

Rules for attaching the shakla to the tow rope

Even the strongest shakla is useless if it is not secured correctly. Follow these step by step instructions:

  1. Check the lugs on both cars. They must be intact, without cracks or rust. On many modern machines, the eyes are hidden under plastic plugs (for example, on Volkswagen Passat B8 - under the front bumper).
  2. Pass the rope through the shackle arc so that the cable loop lies flat, without twists. If the cable has a hook, hook it to the arc.
  3. Close the shakla:
    • For screw — screw the pin until it stops and tighten the nut with a wrench (tightening torque ~20–30 Nm).
    • For snap-on — press the lever until it clicks, then pull the cable to check the fixation.
  • Check the play — there should not be a gap of more than 1–2 mm between the arc and the pin. If there is play, tighten the nut or replace the shackle.

    • Shakla corresponds to the weight of the car

    The lugs are intact and free from dirt.

    The cable is not twisted or frayed

    The shakla pin is tightened all the way

    A clicking sound is heard (for snap-on models)

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    Typical mistakes when attaching:

    • ❌ Using a rusty or deformed shakla — even slight corrosion reduces strength by 20–30%.
    • ❌ Attaching the cable to the suspension elements or bumper - this is prohibited by traffic regulations and can cause vehicle damage.
    • ❌ No safety rope - if the main cable breaks, the car may become uncontrollable.
    ⚠️ Attention: Never attach a shakla to suspension springs, stabilizer or levers - this will lead to their deformation. Use only standard towing eyes!

    Care and storage: how to extend the life of shakle

    Shakla is not a “disposable” accessory. With proper care it will last 10+ years. Follow these guidelines:

    • 🧼 After use Clean the shakla from dirt and salt (especially in winter) with soap and water. To remove rust, use WD-40 or a rust converter.
    • 🛢️ Lubrication - once every six months, apply shackle to the screw threads lithol or graphite lubricant. For snap-on models, silicone grease is sufficient.
    • 🏠 Storage — keep the shakla in a dry place (for example, in a case in the trunk). Avoid dampness - it provokes corrosion even on stainless steel.
    • 🔍 Periodic inspection — before each towing, check:
      • No cracks on the arc and pin.
      • Ease of thread movement (for screws).
      • Spring integrity (for snap-in types).

    If the following appeared on the shackle:

    • 🔴 Cracks or dents - replace immediately.
    • 🟠 Severe corrosion (more than 10% of the surface) - replacement or restoration is required (sandblasting + galvanizing).
    • 🟡 Difficulty tightening threads - clean and lubricate, if that doesn’t help, replace.
    💡

    Store the shakla in a case made of tarpaulin or nylon - this will protect it from moisture and mechanical damage. You can use tool cases or buy specialized ones (for example, from the brand Keeper).

    Top 5 shuckle manufacturers: who to choose?

    There are hundreds of brands on the market, but only a few are trustworthy. We have selected 5 manufacturers whose shakes meet international standards and have positive reviews from car owners:

    1. Rosco (Russia) - budget but high-quality shackles made of galvanized steel. Popular model: Rosco 32401 (WLL 4.75 t, price ~800 rub.). Suitable for most passenger cars.
    2. Keeper (UK) - premium stainless steel shackles with a lifetime guarantee. Model Keeper 2114 (WLL 6.5 t) costs ~2500 rubles, but the price is justified by its reliability.
    3. Crosman (Germany) - optimal price/quality ratio. Crosman 7410 (WLL 3.2 t) will cost ~1200 rubles. and will last at least 5 years.
    4. Van Beest (Netherlands) - professional shackles for tow trucks and trucks. Model Green Pin (WLL 8.5 t) is used at service stations.
    5. Master Lock (USA) - universal shackles with anti-corrosion coating. Master Lock 375DAT (WLL 4.5 t) suitable for crossovers.

    When choosing, pay attention to:

    • 📜 Certificate of Conformity (must be standard DIN 741 or GOST 2224-93).
    • 🏷️ Marking — WLL, material and size must be indicated on the body.
    • 🛒 Place of purchase - Avoid markets and dubious online stores. It is better to take it from trusted auto centers (AutoSpetsCenter, Exist.ru, Ozon with a seller rating above 4.8).

    Frequently asked questions about tow rope shackles

    Can a trailer hitch be used to tow a car?

    Yes, if workload (WLL) corresponds to the mass of the towed vehicle multiplied by 2. For example, a shakla from a trailer MZSA with WLL 3.5 tons suitable for towing Lada Vesta (weight 1.2 tons). However, keep in mind that trailer trailers often have round arc (bow shackle), which is less reliable under dynamic loads than the D-shaped one.

    How to check the shakla for wear?

    Take the shakla in your hands and examine:

    1. Arc - there should be no cracks, even microscopic (use a magnifying glass).
    2. Thread - screw in/unscrew the pin: if it is tight or “sticks”, it means there is corrosion.
    3. Latch (for spring models) - press the lever 10 times: if the spring does not return to its original position, the shackle must be replaced.

    Also check arc deformation: Apply a ruler to the inside - if the gap is more than 1mm, the shakla is worn out.

    What is the difference between a shakla for a cable and a shakla for a chain?

    Main differences:

    • Arc shape - for chains, the arc is wider and thicker, since the chain links take up more space.
    • Material - shackles for chains are often made from hardened steel, since the chain creates point loads.
    • Workload — chain shackles are usually designed for greater weight (from 5 tons), since chains are used for towing trucks.

    Any shakla with a suitable WLL will be suitable for a tow rope, but it is better to choose models with smooth inner surface of the arc - this will reduce cable wear.

    Is it possible to tow a car without a shakla by tying the cable in a knot?

    Technically it's possible, but it's traffic violation (clause 20.4) and extremely dangerous:

    • Knots are weakened by vibration and may come undone.
    • The cable rubs against the edges of the eyelet and breaks.
    • If the cable breaks, it can cause injury to other road users.

    In 2023, the traffic police inspector may issue a fine for such fastening. 500 rub. (Part 1 of Article 12.20 of the Code of Administrative Offenses of the Russian Federation) or prohibit towing until the violation is eliminated.

    How long should the tow rope be for a shackle?

    According to the traffic rules (clause 20.3), the length of the cable must be from 4 to 6 meters. A short cable (less than 4 m) does not give the towed vehicle time to react when braking, while a long cable (more than 6 m) can cling to obstacles. The best option is 5 meters. In this case, the shaklas are attached to both ends of the cable: one to the tow, the second to the towed vehicle.