Draper 51071 Screwpitch Gauge Set 28 Blade 4 UNF UNC 62TPI

This screw pitch gauge set is designed for measuring thread profiles with folding leaves that are individually stamped for accurate identification. It covers American National Thread UNC and UNF standards and measures a range of 4 to 62 threads per inch (TPI). Sold as a loose set of blades to accommodate versatile use, it includes multiple blades for different thread sizes. Use it to identify the thread pitch of screws and bolts and ensure precise matching for repairs, replacements, or manufacturing. The folding leaves allow selecting the appropriate gauge by opening the leaves and aligning the profile with the screw or bolt to measure the thread accurately.

Features

• Folding leaves with individual thread profile stamps
• UNC and UNF thread standards
• Range 4–62 TPI
• Loose set of blades
• Multiple blades for different sizes

Usage

Open the folding leaves to select the appropriate thread gauge. Place the gauge against the screw or bolt to measure the thread profile and identify the pitch for repairs, replacements, or manufacturing.