Description
Six Heavy Hex tools in one pocket organizer: size the nut from one flat, check it against the ruler, read the thread pitch, and look it up on the chart. Inch and metric, each tool in its own vinyl sleeve.
These are the Heavy Hex Pocket Cards from my book, The Bolting Field Technician's Pocket Reference. The book prints the tools on paper at actual size so you can use them right off the page. These are the real ones you carry on the job walk.
What's in the set
- Heavy Hex Gauge, anodized aluminum, laser engraved. It sizes a heavy hex nut from one flat with the stud still in the way, and the stud side reads the stud that goes with it. 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. More on the Heavy Hex Gauge
- Heavy Hex size and pitch chart, inch and metric. Studs from 5/8" to 4" and nuts from 1-1/16" to 6-1/8", with 8 UN, coarse (UNC) and fine (UNF) threads per inch.
- Across the Flats Ruler. Inch and metric side by side, with red lines at the standard heavy hex sizes. When a nut measures odd, it shows you whether you're holding a metric nut. More on the ruler
- Clear Card Thread Checker, inch. Reads 4, 4-1/2, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16 and 18 threads per inch.
- Clear Card Thread Checker, metric. Reads heavy hex metric thread pitch in millimeters.
- Fresnel magnifier. A flat magnifier for reading the fine marks in a dark corner of the unit.
Everything sits in a six-sleeve vinyl organizer and ships in a clear vinyl pouch.
How the tools work together
Size the nut from one flat and you know which wrench or socket to send for. Read the pitch with a clear card, held against the threads or laid over a pencil rubbing, and the chart lines it up with the stud. On a flange behind insulation, or a stud you can barely reach, the pencil rubbing still works.
Who it's for
Millwrights, bolting technicians and pipefitters working flanges, heat exchangers and turbines in plants, refineries and on wind turbines.
Working on cars and everyday hardware instead? See the SAE Pocket Cards.
Frequently asked questions
Do I need the book to use these?
No. Each tool works on its own. The book adds the bolting tables, torque sequences and flange charts behind them.
Why both a gauge and a ruler?
The gauge reads a nut that's still on the stud. The ruler is for loose nuts, and it lines inch and metric up next to each other so you can tell which one you've got.
Can I buy the tools one at a time?
Yes: the Heavy Hex Gauge, the Across the Flats Ruler and the Heavy Hex Clear Card Thread Checker.
