Filar:
A single filament of wire.
Number of Wire
Filars: The number of wires wound as a set to form a
coil. The number can range from one wire (unifilar) to ten wires
(multifilar).
Right- or Left-hand
Wound: Direction in which the coils are wound. When viewed
from the end of the coil, the wire of a right-hand wound coil
wind in a clockwise (right) direction, as they rotate away from
your viewpoint. In a left-hand wound coil, the wire wind in a
counterclockwise (left) direction.
Pitch:
Measured from the beginning of one wire to the beginning of the
next wire. Pitch measurements are calculated by averaging the
measurement over ten wires.
Spacing:
A reference measurement of the distance between wires.
Closewound:
A coil which contains no spacing between the wire.
Tightwound:
A coil which contains no spacing between the wire and has a requirement
for coil stiffness.
Taper:
A change in the outer diameter of a coil, generally a gradual
transition from a large diameter to a small diameter.
Transition:
The length between the small and the large diameters of a multiple
diameter coil.
Offset:
An intentional realignment of the wire with respect to the center
line of a coil.
Offset Dimension:
The dimension from the center line of the original section of
a coil to the new center line of the offset section of the same
coil.
End Form:
The mechanical forming of the distal or proximal wire end per
customer specification.
End Finish:
Standard -- the I.D. may be partially blocked.
Open I.D. -- no blockage of I.D. below minimum specification or
protrusion past O.D. specification allowed.
Ground End -- accomplished with a grinding wheel; produces a flattened
square end with no blockage of I.D. below minimum specification
or protrusion past O.D. specification allowed.
