As I read "tap", I assumed tapping the holes deeper?
- Thread starter Gritineye
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Gritineye
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Yes as previously mentioned.
Gritineye
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Sorry that was a typo on my part, I meant extend the thread down the shank.
not done it yet
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I (nearly) always read the bolt grade as the minimum required for the job in hand. There is not usually any reason, other than cost, for/against using a higher grade?
Agroshield
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Could you ask them whether what they specify comes from ASME/ANSI B18.2.1 or if it is a special?
https://www.zzsteels.com/knowledge/asme-b18.2.1-2010.pdf (Table 2 and paragraph 3.7).
My reading of this is that for a 7/16" diameter item, the thread length is 1 1/8", so on the 1 1/4" long item that you require, that would only leave 1/8" plain shank.
Hello Gritineye,
these people list a 2", could that do if cut down? :-
www.gwr-fasteners.co.uk
Alec
these people list a 2", could that do if cut down? :-
UNF Hexagon Bolts
Manufacturer & Standard Fasteners Distributor of Metric & Imperial Fasteners - Bolts, Screws, Nuts, Washers, Studding, Threaded Bar, Washers
Alec
MetalMonkey
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There can be an edge case for using a lower more ductile grade where it may be subject to some sudden impact loading that might snap a more brittle fastener.
But mostly its cost and availability.
I can't see your link, but you dimensions agreed with my earlier posting of "At those lengths, the threaded part ought to measure 2 x D + 1/4"". There is of course a minimum length where you can only get a fully threaded version.
