Quantcast Correct and incorrect grip lengths

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
To choose the correct replacement for an unserviceable bolt, you must consider the length of the bolt. As shown in figure 5-1, the bolt length is the distance from the tip of the threaded end to the head of the bolt. Correct length selection is indicated when the bolt extends through the nut at least two full threads. See figure 5-2. If the bolt is too short, it will not extend out of the bolt hole far enough for the nut to be securely fastened. If it is too long, it may extend so far that it interferes with the movement of nearby parts. In addition, if a bolt is too long or too short, its grip will usually be the wrong length. As shown in figure 5-2, the grip length should be approximately the same as the thickness of the material to be fastened. If the grip is too short, the threads of the bolt will extend into the bolt hole. The bolt may act like a reamer when the material is vibrating. To prevent this, make certain that no more than two threads extend into the bolt hole. Also, make certain that any threads that enter the bolt hole extend only into the thicker member that is being fastened. If the grip is too long, the nut will run out of threads before it can be tightened. In this event, a bolt with a shorter grip should be used. If the bolt grip extends only a short distance through the hole, a washer may be used. A second bolt dimension that must be considered is diameter. As shown in figure 5-1, the diameter of the bolt is the thickness of its shaft. The results of using a wrong diameter bolt should be obvious. If the bolt is too big, it cannot enter the bolt hole. If the diameter is too small, the bolt has too much play in the bolt hole. The third and fourth bolt dimensions that should be considered when you choose a bolt replacement are head thickness and width. If the head is too thin or too narrow, it might not be strong enough to bear the load imposed on it. If the head is too thick or too wide, it might extend so far that it interferes with the movement of adjacent parts. AN bolts come in three head styles—hex head, clevis, and eyebolt. NAS bolts are available in 5-2 ANF0502 BOLT GRIP LENGTH CORRECT BOLT GRIP LENGTH TOO SHORT BOLT GRIP LENGTH TOO LONG Figure 5-2.—Correct and incorrect grip lengths. ANF0501 DIAMETER LENGTH THREADS GRIP HEAD WIDTH HEAD THICKNESS Figure 5-1.—Bolt terms and dimensions.



Aviation News
A320neo Family sets new standards with 20% reduced fuel burn
A result of Airbus’ latest cabin innovations reinforced by further...
airbus.com
ITEC to Provide Poland Jet Trainers with Propulsion Engines
Poland’s new M346 advanced jet trainer. Photo: Honeywell Aerospace [Avionics...
aviationtoday.com
FAA Approves Flight Testing for Logos Technologies UAS
The Tactically Expandable Maritime Platform (TEMP) UAS. Photo: DARPA [Avionics...
aviationtoday.com
Airbus Americas seeking next group of Liaison Engineers for Mobile Assembly Line
• Liaison Systems Engineer-Powerplant & Mechanical• Liaison Systems Engineer-Cabin... Share...
airbus.com
IAG converts eight A330-200 options into firm orders
Iberia to become new operator of the efficient A330-200 Share...
airbus.com
Georgia ANSP Signs Follow-on Contracts with Comsoft
[Avionics Today 09-22-2014] Sakaeronavigatsia, Georgia’s national Air Navigation Service Provider...
aviationtoday.com
Staying on the Radar: Nav Canada and Aireon Plan to Track and Locate Distressed Aircraft
A diagram of Aireon’s global space-based ADS-B coverage. Photo: Aireon...
aviationtoday.com
UTC Aerospace Opens New Facility to Develop SWIR Technology
UTC Aerospace executives inaugurate the new facility with a ribbon-cutting...
aviationtoday.com
A350 XWB takes centre stage at Istanbul airshow 2014
Airbus products support the fast growing Turkish market Share this...
airbus.com
Northrop Grumman Introduces Sapphire for ATC Communications
Sapphire for ATC Communications. Photo: Northrop Grumman [Avionics Today 09-19-2014]...
aviationtoday.com
Navy’s Triton UAS Completes Cross-Country Test Flight
[Avionics Today 09-19-2014] The MQ-4C Triton Unmanned Aircraft System (UAS)...
aviationtoday.com
Much Remains to be Seen: The Future of NextGen
Michael Whitaker, deputy administrator and chief NextGen officer at the...
aviationtoday.com
easyJet orders 27 more A320 aircraft
A320 Family delivers the best operating costs and passenger comfort...
airbus.com
Embraer Selects Rockwell Collins for Flight Simulator
Embraer's Super Tucano Aircraft. Photo: Wikipedia [Avionics Today 09-18-2014]  Embraer...
aviationtoday.com
FAA Streamlines Aircraft Certification Process
September 17As part of the Federal Aviation Administrations (FAA) ongoing...
faa.gov
NextGen Keeps Operations Running Smoothly at Ft. Lauderdale
A sophisticated NextGen software tool called Time-Based Flow Management (TBFM)...
faa.gov
NextGen Keeps Operations Running Smoothly at Ft. Lauderdale
A sophisticated NextGen software tool called Time-Based Flow Management (TBFM)...
faa.gov
Swiss International Air Lines orders up to 25 A320neo
Successful A320 operations expand with eco-efficient NEOs Share this Read...
airbus.com
Lufthansa Group orders 10 A320ceo aircraft for Eurowings
Eurowings to become new A320 operator Share this Read more...
airbus.com
Qatar Airways flies into a new era of travel with delivery of its first A380
World’s flagship aircraft takes Gulf airline to new heights with...
airbus.com


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +