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JIS B 1122 2015 Edition, December 21, 2015
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Cross recessed head tapping screws
Additional Comments: ENGLISH
Page Count:50
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This Standard specifies the characteristics of cross recessed head tapping screws with thread sizes from ST2.2 to ST9.5 inclusive.

The characteristics of cross recessed head tapping screws with Class 1 to Class 4 threads that are not in accordance with JIS B 1007 are specified in Annex JA.

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 7049: 2011 Cross-recessed pan head tapping screws ISO 7050:

2011 Cross-recessed countersunk (flat) head tapping screws ISO 7051:

2011 Cross-recessed raised countersunk (oval) head tapping screws (Overall evaluation: MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.