Couplemate Express Trailer Parts

CTA-047056 – 6t Auto Lock Combo Pintle Hook

Price

$295.00 Inc.GST

  • Cast iron body with a K1045 steel tow ball.
  • The auto-lock engages as the jockey wheel winds the coupling down.
  • Rated up to 3,500 kg ATM with 50 mm ball couplings.
  • Rated up to 6,000 kg ATM with 75 mm ring couplings.
  • Includes a safety chain, clip, pin and Grade 8 mounting bolts.

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Premium Auto Lock Combination Pintle Hook | Incl. High-Tensile Bolts

The Couplemate™ Premium Combination Pintle Hook is engineered to improve your towing experience and reduce wear. With a heavy-duty design and focus on ultimate safety, this Combination Pintle Hook is the preferred choice of our colleagues in the Australian mining industry.

This component is suitable for towing with a ring and 50mm ball coupling, providing convenience and adaptability.

Made in our Brisbane warehouse, this Australian product is a great, safe solution for your towing needs.

Most combination pintle hooks use a 50mm ball when towing with a ring coupling, but the Couplemate™ Premium version lets your pintle ring pull on a wider cast iron body. The hitch body’s diameter more closely matches that of pintle ring couplings, resulting in less movement between the two components.


Product Specifications

Product dimensions are available in the photo gallery above. For a full-size engineering drawing, click here.

  • Materials: Cast Iron Body, K1045 Steel Tow Ball
  • Auto Lock: To engage the auto lock, lower the jockey until the coupling locks into the pintle hook.
  • Hole Centre: 45mm x 85mm
  • Tow Ball Torque: 553Nm
  • D-Value: 26.7kN
  • V-Value: 16kN
  • CTA-047056

The CM532 is suitable for towing up to:

  • 3500kg ATM on 50mm ball couplings
  • 6000kg ATM with 75mm ring couplings.

Product Contents

  • 1 × Premium Combination Pintle Hook
  • 1 × Pintle safety chain, clip and pin
  • 4 × Grade 8 1/2-inch bolts
  • 4 × Spring washers and nuts

Spare parts for this product include high-tensile bolts, a safety chain and clip, and a Pintle Hook Tow Ball.


Important Information

D-Values for Trailer Couplings

D-Values assign ratings to tow couplings. These values represent the maximum force that can be safely exerted on the component along a prescribed axis.

For example, 50mm ball couplings have a D-value that is determined by:

  • Maximum towing vehicle mass of 5000kg.
  • Maximum trailer mass of 3500kg.

So, why are D-values important? When products are assigned a D-Value, it means that the developing Engineers have rigorously tested the component to ensure a safe product. Use the configurator below to check whether the Premium Combination Pintle Hook suits your application.

Use the Couplemate™ D-Value sheet or the form above to ensure that the kN of this Pintle Hook correctly matches your tow vehicle and trailer.


More Pintle Hooks below

Product Guidelines

✔️ DO’S

  • • Use **high-tensile bolts** included for mounting.
  • • Torque all mounting fasteners to manufacturer specs.
  • • Ensure the **auto lock combination mechanism** engages fully.
  • • Grease the hitch ball and pintle hook regularly.
  • • Verify your vehicle’s towing capacity before use.

❌ DON’TS

  • • Do not exceed maximum **pintle hook weight ratings**.
  • • Never substitute included high-tensile hardware with standard bolts.
  • • Do not tow if the safety locking pin is missing.
  • • Avoid sharp jackknife turns to prevent equipment damage.
  • • Never modify or weld the pintle assembly structure.

Frequently Asked Questions

  • Q: What is an auto lock combination pintle hook?
    A: It is a dual-purpose towing hitch that operates both as a standard tow ball and a heavy-duty pintle hook, featuring an automatic locking latch system for safer ring-coupling security.
  • Q: Why are high-tensile bolts required for installation?
    A: High-tensile fasteners ensure the hitch can safely handle severe shear and tension forces under heavy towing loads without failing.
  • Q: Can I use this with a standard 50mm or 70mm tow ball setup?
    A: Yes, combination pintle hooks are engineered to accommodate standard trailer ball couplings when the top latch is locked open or removed, depending on your specific trailer setup.
  • Q: How often should the combination hitch be inspected?
    A: Inspect the assembly for wear, crack formations, or loose mounting bolts before every heavy trip, and perform a deep lubrication check monthly.

Additional information

Weight 7 kg
Dimensions 23 × 23 × 20 cm
SKU

CM532

Torque

Tow Ball 553Nm

Tow Ball Size

50mm

Bolt Holes

85mm x 45mm

Bolt Diameter

1/2-inch

Brand

Couplemate

Coating

Powder Coated

Country of Origin

Australia

Coupling

75mm Ring

Materials

SAE1045 (Forged)

Application

Commercial Towing, Truck

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.

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