Abbreviation | Description | Abbreviation | Description |
m3 | cubic meter, cubic meters | PF | power factor |
max. | maximum | pot. | potentiometer |
MCM | one thousand circular mils. | ppm | parts per million |
mi. | mile, miles | psi | pounds per square inch |
mil | one | pt., pts. | pint, pints |
min. | minimum | qt., qts. | quart, quarts |
mJ | millijoule, millijoules | qty. | quantity |
MJ | mega joule, mega joules | ref. | reference |
mm | millimeter, millimeters | RFI | radio frequency interference |
m3/min | cubic meters per minute | rms | root mean square |
MPa | megaPascal | rpm | revolutions per inch |
mph | miles per hour | SAE | Society of Automotive Engineers |
MS | military standard | sec. | second, seconds |
mW | milliwatt, milliwatts | SCR | silicon controlled rectifier |
MW | megawatt, megawatts | spec, specs | specification |
N/A | not available | sq. | square |
NEC | National Electrical Code | sq. cm | square centimeters |
NEMA | National Electrical | sq. in. | square inch, square inches |
| Manufacturers Association | tach | tachometer |
NFPA | National Fire Protection Association | TDC | top dead center |
Nm | Newton meter, Newton meters | temp. | temperature |
no., nos. | number, numbers | TIF | telephone influence factor |
NPT | National Standard taper pipe | turbo | turbocharger |
| thread per general use | UNC | Unified coarse thread (was NC) |
N/R | not required | UNF | Unified fine thread (was NF) |
OC | overcrank | UL | Underwriter’s Laboratories, Inc. |
OD | outside diameter | US | undersize |
OEM | original equipment manufacturer | V | volt, volts |
OS | overspeed, oversize | VAC | Volts alternating current |
OV | overvoltage | VDC | volts direct current |
oz. | ounce, ounces | W | watt, watts |
xii Glossary of Abbreviations |