214603 28 Revision A
Term
Definition
ISC Intermediate Speed Control
JIC
Joint Industrial Council: A standards body that developed standard sizing and shape
for original 37° flared fitting
Knife A cutting device which uses a reciprocating cutter (also called a sickle)
MDS Mechanical deck shift
n/a
Not applicable
N-DETENT
The slot opposite the NEUTRAL position on operator’s console of M Series SP
Windrowers
NPT
National Pipe Thread: A style of fitting used for low pressure port openings. Threads
on NPT fittings are uniquely tapered for an interference fit
Nut
An internally threaded fastener that is designed to be paired with a bolt
ORB
O-ring boss: A style of fitting commonly used in port opening on manifolds, pumps,
and motors
ORFS
O-ring face seal: A style of fitting commonly used for connecting hoses and tubes.
This style of fitting is also commonly called ORS, which stands for O-ring seal
R Series header MacDon R80 and R85 rotary disc headers
RoHS (Reduction of
Hazardous Substances)
A directive by the European Union to restrict use of certain hazardous substances
(such as hexavalent chromium used in some yellow zinc platings)
rpm
Revolutions per minute
SAE Society of Automotive Engineers
Screw
A headed and externally threaded fastener that threads into preformed threads or
forms its own thread into a mating part
SDD Single-draper drive
Self-Propelled (SP)
Windrower
Self-propelled machine consisting of a power unit with a header
SK Single knife
SKD Single-knife drive
Soft joint
A joint made with use of a fastener where joining materials are compressible or
experience relaxation over a period of time
spm
Strokes per minute
Tension
Axial load placed on a bolt or screw, usually measured in Newtons (N) or
pounds (lb.)
TFFT
Turns from finger tight
Torque
The product of a force X lever arm length, usually measured in Newton-meters (Nm)
or foot-pounds (lbf∙ft)
Torque angle
A tightening procedure where fitting is assembled to a precondition (finger tight) and
then nut is turned farther a number of degrees to achieve its final position
Torque-tension
The relationship between assembly torque applied to a piece of hardware and axial
load it induces in bolt or screw
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