Civil Engineering Association

I need UNC-2A & UNC-2B, Standard for Nuts & bolt thread.

Regards

Wink

Dear MohsenG,

I hope the following documents will be useful for you.

Regards

IR

ASME B1.1-2003 UNIFIED INCH SCREW THREADS (UN and UNR Thread Form)

Size: 1 MB | Format: PDF | Publisher: ASME | Year: 2003 | pages: 190

This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules, they may be denoted unified inch screw threads.) Several variations in thread form have been developed for unified threads; however, this Standard covers only UN and UNR thread forms. For easy reference, a metric translation of this Standard has been incorporated as Nonmandatory Appendix C. Nonmandatory Appendices A through E contain useful information that is supplementary to the sections of this Standard.

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ISO 68-1:1998 ISO general purpose screw threads - Basic profile - Part 1: Metric screw threads

Size: 0.2 MB | Format: PDF | Publisher: ISO | Year: 1998 | pages: 3

This part of ISO 68 specifies the basic profile for ISO general purpose metric screw threads (M).

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ISO 68-2:1998 ISO general-purpose screw threads - Basic profile - Part 2: Inch screw threads

Size: 0.26 MB | Format: PDF | Publisher: ISO | Year: 1998 | pages: 4

This part of ISO 68 specifies the basic profile for ISO inch screw threads.

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