C Hook Spanner Wrench 38–72mm Round Nut | Non-Slip Handle

C Hook Spanner Wrench – Precision-Forged for 38–72mm Round Nuts

Get the grip and torque you need for round nuts, collet chucks, and water meter covers with this professional-grade C Hook Spanner Wrench. Built from drop-forged carbon steel and heat-treated to 45–48 HRC, this half-moon hook wrench delivers lasting durability and precise fitment across a wide range of round nut sizes.

Key Features

• Drop-Forged Carbon Steel – Wear-resistant construction handles demanding workshop and machinery applications.
• 45–48 HRC Hardness – Heat-treated and electrophoresis-finished for enhanced corrosion resistance and long service life.
• Black Oxidized Finish – Provides a sleek, professional appearance while protecting against rust.
• Anti-Slip Rubber Handle – Ergonomic, comfortable grip keeps the wrench secure in your hand during use.
• Wide Size Range – Fits round nuts from 38–72mm across four size variants: 38–42mm, 45–52mm, 55–62mm, and 68–72mm.
• Versatile Application – Ideal for tightening or loosening round nuts, collet chucks, and water meter covers on machine tools and industrial machinery.
• Easy to Use – Simply select the correct size for your nut and apply leverage — no complex setup required.

Specifications

Package Contents

• 1 × C Hook Spanner Wrench

Made in Mainland China.

For general tool safety guidelines, refer to the OSHA Hand & Power Tools Safety Guide.

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Frequently Asked Questions

Q: What round nut sizes does this C hook spanner wrench fit?

A: This wrench is available in four size variants to cover a wide range: 38–42mm, 45–52mm, 55–62mm, and 68–72mm. Simply choose the size that falls within your round nut's diameter for a secure fit.

Q: What material is the C hook spanner wrench made from?

A: It is crafted from drop-forged carbon steel with a black oxidized finish and electrophoresis surface treatment, giving it excellent wear resistance and corrosion protection. The handle is made from rubber for a comfortable, anti-slip grip.

Q: What applications is this hook wrench suitable for?

A: This hook wrench is designed for tightening and loosening round nuts, collet chucks, and water meter covers on machine tools and industrial machinery. It is suitable for metal applications across a variety of workshop settings.

Q: How hard is this wrench and why does it matter?

A: The wrench is heat-treated to 45–48 HRC (Rockwell Hardness). This level of hardness ensures the wrench can withstand high torque loads without deforming, making it reliable for heavy-duty workshop and machining tasks.