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Starrett Lock Bolt Assembly for 6-Inch Square Heads - Steel Construction, Black Finish - PT99004

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Free shipping on orders over $29.99

$20.27

$ 8 .99 $8.99

In Stock

About this item

  • Heavy Duty - Our lock bolts are made to last with quality materials, ensuring durability, heavy use and better work performance.
  • Easy to Use - Designed to be user-friendly for professional or an amateur when it comes to home improvement, our tools are handy and accessible.
  • Seamless - Engineered for flawless integration with the Starrett 6-inch square head, ensuring optimal performance for variety of tasks.
  • Quality Made - Made from top-tier materials to ensure long-lasting performance and reliability.
  • The Standard for Excellence - Proudly made in the USA, Starrett combines over 140 years of American heritage and innovation with globally sourced materials to deliver exceptional quality tools and products.


The Starrett PT99004 Lock Bolt Assembly is a top-tier replacement part designed for use with 6-inch square heads in Starrett combination squares. This durable lock bolt is crafted from premium steel, ensuring robust performance and longevity. The smooth black finish reduces friction, providing a secure and reliable lock for your measurement tools. Compatible with a wide range of Starrett models, this assembly is perfect for replacing lost or damaged bolts, maintaining the accuracy and functionality of your tools.


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