nut size info needed

[quattro]

Could somebody tell me what is the width across the flats for 15/16-20 UNEF nut? I can't find this info anywhere. It would also help if somebody suggested the place to buy this nut. Preferred material is plastic, but it could be steel or aluminum, too.
Thnks in advance.
Efraim G.

 

[MadMango]

http://www.glenair.com/html/composite/pdf/cominterstan.pdf

Looks to be 1.25 inches or 31.8mm across the flats. "The attempt and not the deed confounds us."

 

[quattro]

Madmango: Thank you for a quick response. While searching the Net, I also came across the same Glenair page. This is not really a plain nut, but some kind of attachment for a specific connector. I was looking for a standard nut dimensions.
Regards,
Efraim

 

[gjb1]

Machinery Handbook states Width across flats for a 5/16" Unified Standard Hex Nuts is 1/2".

gjb

 

[arto]

per B18.2 app2 formulas, it looks like the nut dim's are independent of coarse/fine/extra fine series. It sez 1.5D across flats for Finished Hex nuts & 1.5D+1/8" for Heavy Hex. So it looks like 1.41" for Fin & 1.53" for HHN. [D = nom size]