214713 221 Revision A
Term
Definition
R1 Series header MacDon R113 SP disc headers for windrowers
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
Soft joint
A joint made with use of a fastener where joining materials are compressible or
experience relaxation over a period of time
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
Tractor Agricultural-type tractor
Washer
A thin cylinder with a hole or slot located in the center that is to be used as a spacer,
load distribution element, or locking mechanism
REFERENCE
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