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A-A-51169 1987 Edition, August 18, 1987
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GROOVING MACHINE, SHEET METAL, HAND OPERATED, BENCH MOUNTED
Includes all amendments and changes through Cancellation Notice 1, October 5, 1999
Additional Comments: CNCL NO S/S
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This description covers hand operated, bench mounted, sheet metal, grooving machines of the standard, heavy duty, commercial type, that are used in a production environment to close inside or outside longitudinal seams. The machines are intended for use in sheet metal shops and repair units.

The grooving machines shall be of the following sizes. The size to be furnished shall be as specified (see 6.1).

Size 1 - 22 gauge × 30 inch long capacity.

Size 2 - 22 gauge × 36 inch long capacity.

Size 3 - 20 gauge × 36 inch long capacity.

Size 4 - 20 gauge × 42 inch long capacity.