BS 3692-2001 Speccification for Bolt and Nut
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Transcript of BS 3692-2001 Speccification for Bolt and Nut
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NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
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2/3 H minI
Depth ofbasic threadH
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1/10 H maxI
Completely and partiallydecarburized zone
Non - decarburized zone
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Countersink dasee clause 10.2.2
120 ± 10 chamfer
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Small end of thread = nom.effect dia. of nut minus0.02 mm approx. on 3 mmdia. up to 0.12 mm approxon 39 mm dia.
Large end of thread = coursefit max. effect dia. of nut plus0.035 mm approx. on 3 mm dia.up to 0.12 mm approx. on 39 mm dia.
Dia. of gauging surfaceequal to the minimumacross distance flats of nut
Thread tapered atan included angleof approx. 0.5º
Nut to begauged
Feeler gauge equalto squareness tolerance(max.)
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