Description
The Heavy Hex Gauge sizes a heavy hex nut from one flat, with the stud still in the way, and tells you the stud that goes with it. Inch on the front, metric on the back. This is the gauge shown in my book, The Bolting Field Technician's Pocket Reference.
How to read it
Nut side. Set the corner of the nut in the gauge and read the size where the flat ends. That's the nut size, and your wrench or socket size. Only the standard sizes are marked, so there's nothing in between to confuse you.
Stud side. Measure across the stud or bolt. Follow the tick line across and it lands on the matching nut. For example, a 1-13/16" nut goes on a 1-1/8" stud.
Details
- Inch: nuts 1-1/16" to 4-5/8", studs 5/8" to 3"
- Metric on the back: nuts 32 mm to 120 mm, studs M22 to M76
- 6061 aluminum, anodized navy blue and laser engraved
- Rated to a little over 1000°F (538°C), so it holds up on hot units
- 2" x 3-3/8" x 0.040", fits where the credit cards go in your wallet
- Made in the USA, U.S. Patent 10,288,400
For millwrights, bolting technicians and pipefitters on flanges, heat exchangers and turbines in plants, refineries and on wind turbines.
Full specs and FAQ are on the wallet Heavy Hex Gauge page. Studs over 3"? See the 6-1/8" Heavy Hex Gauge. Want the whole kit? See the Heavy Hex Pocket Cards.
