Fasteners Training


Class Information
Tooling U-SME classes are offered at the beginner, intermediate, and advanced levels. The typical class consists of 12 to 25 lessons and will take approximately one hour to complete.
Class Name:Overview of Non-Threaded Fasteners 125
Description:This class summarizes the various types of non-threaded fasteners used in assemblies and describes their common applications.
Prerequisites: none
Difficulty:Beginner
Number of Lessons:13
Language:English, Spanish
 
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Class Outline
  • Objectives
  • Advantages of Non-Threaded Fasteners
  • Semi-Permanent Pins
  • Types of Semi-Permanent Pins
  • Clevis Pins and Cotter Pins
  • Quick-Release Pins
  • Keys and Keyways
  • Types of Keys
  • Snap Rings
  • Types of Snap Rings
  • Rivets
  • Types of Rivets
  • Summary
  
Class Objectives
  • List the major types of non-threaded fasteners.
  • Describe the characteristics of dowel pins.
  • Identify types of semi-permanent pins.
  • Describe the characteristics of an assembly using clevis and cotter pins.
  • Describe the characteristics of push-pull pins.
  • Describe the characteristics of keys.
  • Identify types of keys.
  • Describe the characteristics of snap rings.
  • Identify types of snap rings.
  • Describe the characteristics of rivets.
  • Identify types of rivets.

Class Vocabulary

Vocabulary TermDefinition
axially assembled snap ring A snap ring that is assembled by fitting the ring over the end of a shaft or through the opening of a hole.
axis An imaginary straight line that passes through the center of an object.
bar key A long rectangular device with parallel sides and precise dimensions that is inserted into a matching keyway and key slot. Bar keys are typically used to assemble gears, handles, wheels, or similar components onto a shaft.
blind rivet A type of rivet with a tubular shank that is installed with access to only one side of the part. Blind rivets are generally used to simplify assembly and to improve appearance.
burr A rough, sharp edge remaining on a part after machining or stamping. Burrs pose an injury risk and interfere with the fitting of parts.
chamfer A small angled surface added on the end of a shaft, around the opening of a hole, or along an edge. A chamfer removes the sharp edge and helps remove burrs.
clearance fit Assembled into a matching hole with a slightly larger diameter to allow for easy joining or removal.
clevis pin A cylindrical pin with a head at one end and one or more holes running through the diameter. A clevis pin is typically locked in place with a cotter pin to provide motion between components where great accuracy is not required.
cotter pin A pin with two ends originally positioned together that are fitted through a hole and then bent backwards to lock the pin in place. Cotter pins can be used to lock clevis pins or certain styles of washers.
dowel pin A solid, cylindrical semi-permanent pin mainly used to locate machine parts in a fixed position or to maintain alignment. Dowel pins are the most basic pins.
fastener A device that holds two or more objects together. A fastener is a bolt or a screw, or even a button or a zipper.
gib-head key A device similar to a standard bar key, except with a head at one end that extends above the top surface of the key.
key A rectangular metal component with parallel sides and accurate dimensions. The key is inserted into a matching keyway and key slot to assemble gears, wheels, and other components onto a shaft.
key slot A rectangular groove running parallel to the axis of a shaft that is designed to be assembled with a key.
keyway A rectangular groove inside the hole of a gear, wheel, or similar component that is designed to be assembled with a key.
large rivet A type of rivet with a solid shank and a diameter of 0.500 in. or more. Large rivets are mainly used for structural work on buildings, bridges, or tanks.
non-threaded fastener A type of fastener that does not contain threads. Common types of non-threaded fasteners include pins, retaining rings, and rivets.
nut A metal block with a threaded hole that mates with a bolt. The outer shape of a nut is often six-sided.
pin A thin, often straight, cylindrical non-threaded fastener used to secure the position of two or more machine parts.
press fit Assembled into a matching hole with a slightly smaller diameter through the use of force.
punch A metal tool with an end that can be hammered that is used to either indent material or aid in removing components.
push-pull pin A quick-release pin with a button that is pressed to retract locking balls on the opposite end that hold the pin in the mating component.
quick-release pin A type of pin that is generally used for the manual assembly and disassembly of rigid machine components. Quick-release pins include push-pull pins.
radially assembled snap ring A snap ring that is assembled by fitting the ring onto a shaft from the side. Radially assembled snap rings cannot be assembled into a hole.
retaining ring A flat, circular, non-threaded fastener with a hollow center and an open section. Retaining rings provide a shoulder and can be inserted onto a shaft or inside a hole with an internal groove.
rivet A type of non-threaded fastener that consists of a shank and a head made of deformable material. Rivets are inserted through holes, and the shank is formed into a matching head on the other side of the part.
self-locking ring A snap ring with small prongs around its circumference that grip into the mating part.
semi-permanent pin A type of pin that requires pressure, force, or tools for installation or removal. Semi-permanent pins include straight pins, taper pins, cotter pins, and clevis pins.
shear force A force that attempts to cause the internal structure of a material to slide against itself.
shear pin A cylindrical pin made from a relatively soft material that is designed to shear and break from excessive damaging shocks or loads. The shear pin breaks to preserve the rest of the assembly.
small rivet A type of rivet with a shank diameter of less than 0.500 of an inch. Small rivets are often used in the sheet metal and aircraft industries.
snap ring A flat, circular non-threaded fastener with a hollow center and an open section. Retaining rings provide a shoulder and can be inserted onto a shaft or inside a hole with an internal groove.
spiral-wound ring A snap ring consisting of a strip of metal that is coiled back onto itself.
spring clip A simple device made from soft, bendable material that expands to fit over a shaft.
spring pin A hollow cylindrical pin with an open slot along the pin's length that allows the pin to compress and fit into a smaller hole.
spring steel A high-carbon steel that exhibits excellent strength and is used to make springs and other similar components.
stamped ring A snap ring made from sheet metal, with a relatively flat design.
straight pin A solid, cylindrical semi-permanent pin mainly used to locate machine parts in a fixed position or to maintain alignment. Straight pins are also referred to as dowel pins.
taper pin A semi-permanent, cylindrical pin that has a slight taper along its length. Taper pins are often used on parts that require frequent assembly and disassembly.
tapered key A device similar to a standard bar key, except with a top surface that tapers and gradually decreases in size along its length.
threaded fastener A type of fastener that contains threads. Bolts, screws, and nuts are examples of threaded fasteners.
through hole A hole that begins on one side of a workpiece and extends through and exits another surface of the workpiece.
torque A force that attempts to twist or rotate material.
Woodruff key A device with a flat top, flat sides, and a semi-circular curved bottom. Woodruff keys are used to assemble components on a shaft by fitting into a matching curved key slot.