scope:

This description covers tool holders that are designed to hold and support knurling tools that are used on bench and engine lathes.

Tool holders shall be of the following types and sizes. The type and size to be furnished shall be as specified (see 6.1).

Type I - Holder, knurling tool, single, lathe. Size - Sizes shall be selected from table I. Type II - Holder, knurling tool, multiple, lathe. Size - Sizes shall be selected from table II.

TABLE I. Type I - Single knurling tool holder.

Knurl dimensions Tool Thickness Height Length of Outside Thickness Hole holder of shank; of shank; Shank; diameter of knurl; diameter size inches inches -in. inches inches inches 4 5/16 ¾ 2-15/16 ⅝ 5/16 7/32 10 ⅜ ⅞ 3-¼ ⅝ 5/16 7/32 11 ½ 1-⅛ 3-¾ ¾ ⅜ ¼ 12 ⅝ 1-⅜ 5 ¾ ⅜ ¼ 13 ⅞ 1-¾ 5-¾ 1 ⅜ 5/16

TABLE II. Type II - Multiple knurling tool holder.

Length of Knurl dimensions Tool Thickness Height shank; Outside Thickness Hole holder of shank; of shank; inches, diameter; of knurl; diameter; size inches inches min. inches inches inches ------------------------------------------------------------------------------------- 20 ⅜ ⅞ 2-½ ⅝ 5/16 7/32 21 ½ 1-⅛ 3-⅛ ¾ ⅜ ¼ 22 ⅝ 1-⅜ 3-⅛ ¾ ⅜ ¼