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WorksheetsBolted Connections: Definition and Components
Total questions: 10
Worksheet time: 5mins
Refer to the bolted connection diagram. Which statement best describes the primary function of a steel washer placed under the bolt head in a bolted connection?
It increases the thread engagement by extending the threaded portion.
It distributes clamping pressure and prevents the threaded portion from bearing directly on the connected pieces.
It locks the nut in place by creating friction within the threads.
It shortens the grip length to reduce bolt deformation.
Which option lists only bolt types explicitly named in the Types of Bolts overview?
Unfinished or Black, Turned, Ribbed, High Strength
Carriage, Lag, Anchor, Expansion
Machine, Eye, Hex-Flange, Stud
Countersunk, Coach, Timber, Sleeve
Which pair correctly matches a listed category with a plausible manufacturing detail based on the terminology?
Turned Bolts — produced with machined shanks for tighter tolerances
Ribbed Bolts — designed without surface features to reduce friction
High Strength Bolts — intended for decorative trim applications
Unfinished or Black Bolts — always hot-dip galvanized for corrosion resistance
A specification calls for general-purpose bolts with minimal finishing processes. Which category from the overview best fits this description?
High Strength Bolts
Unfinished or Black Bolts
Ribbed Bolts
Turned Bolts
Which failure mode specifically involves sliding along a plane within the bolt due to transverse loading?
Bearing failure of bolts
Shear failure of bolts
Tension failure of bolts
Block shear failure
In a bolted joint, localized crushing of the bolt or plate material around the hole is best described as which failure mode?
Tension failure of bolts
Bearing failure of bolts
Block shear failure
Shear failure of bolts
Which failure type is associated with the plate material around the bolt hole being compressed beyond its capacity?
Bearing failure of plates
Tension or tearing failure of plates
Shear failure of bolts
Block shear failure
Refer to the diagram showing single and double shear planes in bolted joints. Which statement best describes when shear failure of a bolt occurs?
When the plates slip and the shear stress on the bolt exceeds its shear capacity, causing the bolt to shear along its plane
When the bolt stretches due to tension and the plates remain stationary
When bearing stresses crush the plate around the hole without any slip
When high-strength steel plates prevent movement and the bolt head fractures
According to the instructional text, block shear failure in bolted joints occurs when plates fail due to a combination of which actions?
Shear only
Tension only
Tension and shear together
Bearing and bending
In the second figure, which failure mode shows the bolt head pulling through the plate thickness under load?
Net tension
Shear-out
Pull-through
Block shear
