Lug Nut and Wheel Stud Thread Checker Set

Quickly identify unknown lug nut and wheel stud thread sizes with this color-coded thread checker set. Designed for fast, reliable size identification, it measures 14 common SAE and metric automotive thread sizes used on cars, trucks, SUVs, trailers and custom wheel applications.

Each aluminum gauge features external threads for checking lug nuts and internal threads for checking wheel studs. Simply thread the unknown fastener onto or into the matching gauge to determine its diameter and thread pitch. The gauges are color-coded by size, making it easier to locate the correct checker and stay organized.

This convenient tool helps eliminate guesswork when replacing lug nuts, wheel locks or studs. It is an excellent addition to tire shops, repair facilities, parts counters, dealerships, salvage yards, race shops and home garages.

Features

• Identifies lug nut and wheel stud thread sizes
• Measures 14 common SAE and metric thread sizes
• External threads check internally threaded lug nuts
• Internal threads check externally threaded wheel studs
• Color-coded gauges simplify size identification
• Lightweight aluminum construction
• Helps prevent ordering or installing the wrong hardware
• Useful for automotive professionals and DIY mechanics

SAE Thread Sizes

• 3/8"-24
• 7/16"-20
• 1/2"-20
• 9/16"-18
• 5/8"-18

Metric Thread Sizes

• M10x1.25
• M12x1.25
• M12x1.5
• M12x1.75
• M14x1.25
• M14x1.5
• M14x2.0
• M15x1.25
• M16x1.5

Take the Guesswork Out of Wheel Fastener Identification

Lug nuts and wheel studs can appear nearly identical even when their diameters or thread pitches differ. Attempting to install the wrong size may damage the threads and create an unsafe fit. This lug nut and wheel stud thread gauge provides a simple way to verify the correct thread before selecting replacement hardware.