Screws and Bolts
Screws and bolts are given a part code to designate their diameter in ______ of an inch increments and their length in ______ of an inch increments.
Diameter: 1/16th of an inch
Length: 1/8th of an inch
Countersunk Rivets are tapered at _______ Degrees.
100 Degrees
What are thickness gauges and what are they used for?
Thickness Gages or Feeler Gages, are precision ground steel leaves, used to measure the clearance, or space between parts
What is the difference between sheet metal screws and machine screws?
Sheet metal screws: Coarse thread
Machine screws: Fine thread
What are Ice Box Rivets? Which alloy designation is Icebox Rivets?
Rivets that are put into a freezer and stored before bucking 2017, 2024
What are Vernier calipers and what are they used for?
Vernier Caliper is a precision measuring tool that is used to make inside and outside measurements
What is the number one rule after using nuts to tighten bolts?
All nuts after tightening must have a safety device.
True or False, Pop-Rivets are used for structural applications.
False
What are Telescoping Gauges and what are they used for?
Transfer the size of an Internal Diameter that is then transferred to a Micrometer used to measure the Telescoping Gage.
What is the Grip-Length of a Standard Aircraft Bolt?
The length of the unthreaded portion of the bolt.
Breakdown the MS Rivet identification number.
MS20470AD-4-6
MS20:
470:
AD:
4:
6:
MS20: Military Specification
470: Head type (Universal)
AD: Alloy Designation
4: Diameter in 1/32nds
6: Length: 1/16th
What are Dial-Indicators and what are they used for?
A Dial Indicator is a Tool that can Register small movements by using a Needle on a Dial Face. It can be used to measure crankshaft runout, gear backlash, end-play in a shaft or axle, and radial play in such components as turbocharger rotors.
What are the four types of pins commonly used in aviation?
Cotter Pin, Roll Pin, Clevis Pin, Taper Pin
Tell me which alloy identification goes to what rivet and what each identification letter stands for.
(EX: B – 5056 - Raised Cross).
D –
DD –
A –
AD –
D – 2017 – Raised Dot
DD – 2024 – Two Raised Dashes
A – 1100 – Plain Rivet
AD – 2117 - Dimple
Tell me at least three different parts of a micrometer.
Frame
Anvil
Spindle
Sleeve or Barrel
Thimble
Ratchet Stop
Lock