Fractional Screw Checker & Bolt Gauge

The PEC Tools Fractional Screw Checker & Bolt Gauge is a heavy-duty, multi-functional powerhouse designed to instantly identify diameters, threads per inch (TPI), and lengths with machinist-grade precision. Stop guessing at thread pitches and wasting time at the hardware store.

Key Features & Benefits of a Fractional Screw Checker & Bolt Gauge :

• All-in-One Identification: Instantly find diameter, threads per inch (TPI), and length. The plate also includes critical tap drill size references for shop projects.

• Professional Durability: Unlike plastic gauges that strip over time, ours is manufactured from heavy-gauge, hardened steel with a rust-resistant satin chrome finish. The precision-machined threaded holes remain accurate for a lifetime.

• The "Thread Doctor": Because it is hardened steel, you can use it to straighten minor bends or "chase" (clean) dirty and rusty threads by simply running the bolt through the plate.

• Integrated Shop Tools: Includes unthreaded holes for checking rivet and cotter pin diameters, plus an etched 6" (or 3") scale for immediate length measurements.