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RE: Def.: Snug-Fit

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Installation requirements for snug-tightened joints can be found in the “RSCS Specification for Structural Joints Using ASTM A325 or A490 Bolts”, which is at the back of the AISC Steel Manual.  The specific section for installation is 8.1 and it says that “the snug-tightened condition is the tightness that is attained with a few impacts of an impact wrench or the full effort of an ironworker using an ordinary spud wrench to bring the connected plies into firm contact.”


Hope that helps.


Doug Mayer, SE

Structural Engineer





7535 North Palm Ave., Suite 201

Fresno, CA 93711


(559) 437-0887 Ph.

(559) 438-7554 Fax




From: Tom Skaggs [mailto:tom.skaggs(--nospam--at)]
Sent: Tuesday, March 13, 2007 1:35 PM
To: seaint(--nospam--at)
Subject: RE: Def.: Snug-Fit


Would you care to provide a reference to this definition?




From: ECVAl3(--nospam--at) [mailto:ECVAl3(--nospam--at)]
Sent: Tuesday, March 13, 2007 13:04
To: seaint(--nospam--at)
Subject: Re: Def.: Snug-Fit


Hand tight + 1/3 turn with wrench (not impact wrench)

Stephen Macie, P.E.



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