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A-A-51139 Revision A, March 11, 1986
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HOLDER, TURNING TOOL, LATHE
Includes all amendments and changes through Cancellation Notice 1, October 18, 1999
Additional Comments: CNCL NO S/S
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This description covers lathe turning tool holders of the standard commercial, heavy duty type which are used in a production environment.

Tool holders shall be of the following types, classes, styles, and the tool holder numbers listed in tables I, II, and III. The type, class, style, and tool holder number to be furnished shall be as specified (see 6.1).
        Type I - Holder, turning tool, lathe, broached hole, or bit
                 channel parallel to the base.

          Class 1 - Straight shank (see table I).
          Class 2 - Left-hand offset shank 34 degrees.
            Style A - Rigid (single size) tool (see table I).
            Style B - Multi-size tool (see table II).
          Class 3 - Right-hand offset shank 34 degrees.
            Style A - Rigid (single size) tool (see table I).
            Style B - Multi-size tool (see table II).

        Type II - Holder, turning tool, lathe, broached hole, or bit
                  channel tilted 14 degrees from the base.

          Class 1 - Straight shank (see table III).
          Class 2 - Left-hand offset shank 34 degrees.
            Style A - Rigid (single size) tool (see table III).
            Style B - Multi-size tool (see table II).




          Class 3 - Right-hand offset shank 34 degrees.
            Style A - Rigid (single size) tool (see table III).
            Style B - Multi-size tool (see table II).