247SimpleTests
ASVAB · Fasteners and Hardware

What is the purpose of a washer used with a nut and bolt?

Reviewed by Jordan Morley, Editorial Lead at 247SimpleTests. Written by the 247SimpleTests Editorial Team from the official source material cited on every question.

Correct answer

To distribute the load and protect the surface, and (with a lock washer) help prevent loosening

  1. A To replace the nut
  2. B To distribute the load and protect the surface, and (with a lock washer) help prevent loosening
  3. C To cut threads
  4. D To make the bolt longer

Why this is the answer

A flat washer spreads the clamping force of a bolt or nut over a larger area, which distributes the load and protects the surface from damage and from the fastener digging in. A lock washer (split or toothed) adds tension or bite that helps keep the nut or bolt from vibrating loose. Washers are simple but important fasteners-system components. Choosing and placing washers correctly improves the strength and durability of a bolted joint. Understanding the role of washers — load distribution and, for lock washers, resisting loosening — is part of the fasteners topic.
Source: ASVAB SI, Washers

Practice more questions

This question is from our ASVAB Practice Tests practice test. Take the full practice test to test your knowledge across all Fasteners and Hardware and other topics.

Take the Shop Information practice test →

About this topic: Fasteners and Hardware

Fasteners and hardware questions cover screws, bolts, nuts, washers, nails, rivets and anchors, including thread types and when to use each. Expect questions on the difference between a wood screw, a machine screw and a lag bolt. This is one of 9 Shop Information questions on fasteners and hardware, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

Related questions

Fasteners and Hardware

What is the difference between a wood screw and a machine screw?

 Fasteners and Hardware

What is the purpose of a washer when used with a bolt and nut?

 Fasteners and Hardware

What is a 'penny' rating used to measure?

 Fasteners and Hardware

A bolt requires exactly 25 foot-pounds of torque per the manufacturer's spec. Which tool should you use?

Recommended study materials

Study guide

ASVAB Total Prep (Kaplan)

Kaplan's complete ASVAB guide with 1,000+ practice questions, 6 full-length tests, and AFQT focus.

Check Price → Study guide

Barron's ASVAB with Online Tests 12th Ed.

Comprehensive ASVAB review for all nine subtests with full-length practice exams and online tools.

Check Price → Study guide

ASVAB for Dummies 4th Ed. (Wiley)

Accessible, thorough ASVAB prep covering all subtests with tips for boosting your AFQT score.

Check Price →

As an Amazon Associate, CJ Affiliate, and AWIN publisher we earn from qualifying purchases. Links above are affiliate links. Full disclosure →