Precision in Motion
Both brake rotors and shafts are checked for this unwanted wobble
Runout
Heat treatment that hardens steel quickly
Quenching
Tool used to tighten bolts to specification
Torque wrench
Cutting tools and engine components both fail faster without this
Lubrication
Brake rotors, flywheels, and machined surfaces are commonly checked for this characteristic.
Answer: Flatness
Measurement describing allowed size variation
Tolerance
Common engine block material in older vehicles
Cast iron
Tool used to create/repair threads internally
Tap
Blueprint dimensions and engine specifications must stay within this range
Tolerance
Typical included angle on a drill bit
118°
This tool checks crank journals and turned diameters
Micrometer
This process restores surface finish in both engine cylinders and machined bores.
Honing
Device used to measure cylinder bore diameter
Bore gauge/telescoping gage/inside micrometer
Device preventing fastener loosening
Lock washer
Ferrous material with high carbon content
Steel
Both machinists and automotive technicians rely on this principle to prevent part failure from excessive force.
Answer: Torque
Support component reducing friction on rotating shafts
Bearing
Machine removing brake rotor material
Lathe
Tool used to create/repair external threads
Die
Thread repair insert brand commonly used
Heli-Coil
This condition affects engine bearings and machine spindles when lubrication fails.
Answer: Seizing
Measurement describing thread spacing
Pitch
This fastener helps to secure universal joints in driveshaft yokes
Snap/Retaining rings
A slip yoke on a driveshaft has this machined part coupled up to it to give it a sliding motion
Spline
Shaft converting piston motion to rotation
Crankshaft