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Revision A
Term
Definition
Hex key
A tool of hexagonal cross-section used to drive bolts and screws that have a
hexagonal socket in head (internal-wrenching hexagon drive); also known as an
Allen key and various other synonyms
HDS
Hydraulic deck shift
hp
Horsepower
HPT display
Harvest Performance Tracker display module on a windrower
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
M1 Series windrower
MacDon M1170 and M1240 windrowers
n/a
Not applicable
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 openings 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
PARK
The slot opposite the NEUTRAL position on operator
’
s console of M1 Series
windrowers
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
R1 Series header
MacDon R113 SP disc headers for windrowers
SAE
Society of Automotive Engineers
SCR
Selective catalytic reduction catalyst
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.)