As correctly pointed out by ASimpson, there are classification of fits which are application specific. He lists the metric version, imperial are equivalents noting 1.0 inch = 25.4 mm. There are several good references on this, look to the web. But the Machinist Handbook does discuss this, at least in the 23rd edition.
How does Dhea work? DHEA is a parent hormone produced by the adrenal glands near the kidneys and in the liver. In men, DHEA is also secreted by the testes. It is changed in the body to a hormone called androstenedione. Androstenedione is then changed into the major male and female hormones.
DHEA/Pregnenolone. Turn back the hands of time, and look and feel younger without shots or potentially painful and risky surgeries. Super Good Stuffâs Strength and Energy Formula (DHEA/Pregnenolone) works to naturally maintain your bodyâs health and youthfulnessâwith no known side effects.*. Dieting, caffeine, stress, overstimulation, and aging causes your body to produce fewer and fewer of these key hormones (can be reduced by half by age 40).