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12_e1883108-e97b-493e-89d1-fa57e337234e - Northline Parts

44 Pcs Sets New Nut and Bolt Thread Checker 23 Inch and 21 Metric In Box

Alligator_819_x_200_px - Northline Parts

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$66.99
Sale price  $66.99 Regular price 

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I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

44 Pcs Sets New Nut and Bolt Thread Checker 23 Inch and 21 Metric In Box

Stop the guesswork and save time on your projects with this premium aftermarket 44-piece nut and bolt thread checker set. Designed for both professionals and DIY enthusiasts, this comprehensive kit allows you to quickly and accurately identify the size and pitch of fasteners. Organized in a durable storage box, this set includes a wide variety of the most common inch and metric sizes, making it an essential addition to any workshop or garage.

Key Features & Benefits

  • Includes 23 Inch and 21 Metric thread gauges for maximum versatility.
  • High-contrast markings for fast and easy size identification.
  • Precision-machined from durable materials for reliable accuracy.
  • Comes in a sturdy, organized box to keep your tools secure and portable.
  • Eliminates errors when purchasing or replacing hardware.

Compatible Models

  • Universally compatible with standard SAE (Inch) and Metric fasteners.
  • Ideal for automotive repair, mechanical maintenance, and household projects.

Product Specifications

  • Total Piece Count: 44
  • Inch Size Coverage: 23 unique gauges
  • Metric Size Coverage: 21 unique gauges
  • Condition: New Aftermarket
  • Storage: Dedicated carrying case included

Frequently Asked Questions

Is this an OEM part? No, this is a high-quality aftermarket tool set designed to meet or exceed the utility of original equipment.

How do I confirm compatibility? This tool is designed to identify sizes; simply thread your nut or bolt onto the corresponding gauge to confirm the exact size and pitch needed for your application.


Important: This is an aftermarket replacement part sold by Northline Parts. It is not made by the original equipment manufacturer unless specifically stated. Brand names, model names, and part numbers are used only to identify compatibility. Please compare your original part, photos, and fitment details before ordering.

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Service was professional and easy to work with. They kept me updated on my order and recommended a different part when the one I originally picked wasn’t going to work. Everything showed up as expected and the process was smooth overall.

- Customer, Chris D.

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