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PIN PUNCH 5/16" - Mayhew Tools

Part #: MY21104

The Mayhew Tools MY21104 5/16" Pin Punch is a professional-grade hand tool engineered for precision and durability in demanding automotive and industrial environments. This essential punch is designed to accurately drive out and remove loosened pins and keys, ensuring a clean and efficient workflow for technicians and mechanics. Crafted with a focus on reliability, it upholds Mayhew's long-standing reputation for quality American-made tools.

Key Features

  • Professional Grade Construction: Forged from high-quality alloy steel and heat-treated for exceptional strength and extended tool life, ensuring it withstands rigorous use.
  • Precision Tip: Features a precision-ground 5/16" tip, ideal for accurate engagement and effective removal of various types of pins.
  • Corrosion Resistance: Coated with a black oxide finish, providing enhanced protection against rust and corrosion in harsh shop conditions.
  • Optimized Performance: Specifically designed to remove pins and keys that have already been loosened, preventing damage to the tool and workpieces.
  • American Made Quality: Proudly manufactured in the USA, reflecting Mayhew Tools' commitment to superior craftsmanship and dependability.
  • Durability Rating: Exhibits a Rockwell hardness of 55-57, signifying robust performance and resistance to wear.

Applications

This 5/16" pin punch is an indispensable tool for a wide range of tasks, particularly in vehicle maintenance and machinery repair. It is commonly used for driving out roll pins, cotter pins, and other fasteners in automotive assemblies, engines, transmissions, and brake systems. Additionally, it serves to align holes in components before insertion of pins or bolts, making it a versatile addition to any professional toolkit.

Specifications

  • Manufacturer: Mayhew Tools
  • Model Number: MY21104
  • Pin/Tip Size: 5/16" (0.313 in)
  • Overall Length: 6 inches
  • Pin Length: 1.25 inches
  • Weight: 0.34 lbs
Only 1 left in stock - order soon

$9.40

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This product was added to our catalog on Sunday 31 May, 2026.

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