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Hex & Twist Socket, 21mm - Lisle

Part #: 13240

The Lisle 13240 Hex & Twist Socket, 21mm, is an essential tool engineered for professional technicians and mechanics tackling challenging fastening applications. This specialized socket offers a dual-purpose design to efficiently handle both standard hex fasteners and those that are damaged, corroded, or rounded. Crafted for durability and reliable performance, it integrates seamlessly into a professional toolkit, ensuring quick and effective repairs.

Key Features

  • 21mm Size: Precisely sized for a wide range of common automotive and industrial fasteners.
  • Dual-Action Design: Features a conventional 6-point hex on one end for standard nuts and a left-hand twist spiral on the other for compromised fasteners.
  • Damaged Fastener Removal: The innovative twist spiral design incorporates sharp edges that firmly bite into stripped, rusted, or corroded nuts without slipping, facilitating their removal.
  • Professional-Grade Construction: Manufactured from impact-rated chrome moly steel, ensuring exceptional strength and longevity under high-torque conditions.
  • System Compatibility: Designed to be used individually or as a replacement component within the comprehensive Lisle 13420 Hex & Twist Socket Set.

Applications

The Lisle 13240 Hex & Twist Socket is indispensable for a variety of demanding tasks in automotive repair shops and industrial maintenance environments. It excels in situations where standard sockets fail, such as removing stubborn or rounded lug nuts, corroded exhaust manifold bolts, or seized suspension components. Its ability to reliably install and remove normal, damaged, or corroded nuts makes it a versatile solution for general vehicle service, heavy-duty truck maintenance, and industrial machinery repair where 21mm fasteners are prevalent.

Specifications

  • Model Number: 13240
  • Size: 21mm
  • Material: Chrome Moly Steel
  • Shipping Weight: 0.44 lbs
Only 1 left in stock - order soon
List: $18.99 Save: $1.39

$17.60

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  • Model: 428695
  • Shipping Weight: 0.44lbs
  • UPC: 083045132400
  • Manufacturers Part #: 13240
  • Manufactured by: Lisle
  • Also Known As: LIS13240, LIS-13240

This product was added to our catalog on Monday 18 May, 2026.

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