How many threads should protrude beyond the nut? | Eng-Tips
Dec 11, 2013 · For existing or reused fasteners where the thread protrusion exceeds 10 threads, verification should be made that the proper length fastener was installed. For existing installations …
Thread Engagement | Eng-Tips
Jul 18, 2023 · Excess thread protrusion beyond the nut should be minimized. My conclusion is that condition of 'bolt flush with the end of the nut' is acceptable per B31.3. Practically speaking it takes …
Standard for how many threads to be out from a nut | Eng-Tips
Apr 17, 2007 · For existing or reused fasteners where the thread protrusion exceeds 10 threads, verification should be made that the proper length fastener was installed. For existing installations …
minimum exposed thread | Eng-Tips
May 31, 2005 · On a rolled thread bolt you will see the end of the bolt is extruded by the thread rolling process thus making the first couple of turns imperfect threads. The same conditions occur when a …
grip length calculation | Eng-Tips
Oct 29, 2010 · Short thread bolts demand precision grip measurement and a matching low height nut [shear or shear-tension rated]. A regular height nut probably wont have proper thread protrusion …
Minimum Bolt Projection. Engineering Judgement | Eng-Tips
Aug 20, 2025 · A minimum thread protrusion length is given to ensure that all the threads are engaged. This is required to ensure a full-strength fastener. Equipment component drawings should specify the …
bolt and nut fasteners thread engagement | Eng-Tips
Feb 25, 2005 · Examining the leading end of the bolt or stud reveals a partial starting thread. In order for there to be full engagement a full thread crossection must exist for there to be full engagement. This …
Screw tip protrusion | Eng-Tips
Jun 9, 2014 · Have a job where component connects to structure. Specified a l=1+1/4", #12 screw, drilled and tapped through the component, 1/8th aluminum, to the structure, 1/4" steel angle. Went to …
installation vs seating torque | Eng-Tips
Oct 2, 2024 · Bolt thread protrusion is used as proof that the thread has fully engaged the locking portion of the nut, accounting for the incomplete threads typically at the end of bolts. Specs are frequently …
Bolting Requirements in Code | Eng-Tips
Mar 29, 2006 · Go to Annex F in B16.5. This gives you a method for calculating bolt/stud lengths. I don't think you'll find anything specific on thread projections past the nut but 2 threads is the general rule …