A-A-2568 Bar, Digging

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A-A-2568

March 25, 1988

COMMERCIAL ITEM DESCRIPTION

BAR, DIGGING

The General Services Administration has authorized the use of this commercial item description in preference to Federal Specification GGG-B-101, Type VII, Sizes 1 and 2.

This commercial item description covers digging bars.

SALIENT CHARACTERISTICS

Material. The material used in the manufacture of the bars shall be lither tool steel or an alloy steel. The chemical composition of the material and the heat treatment employed shall be such as to produce bars to withstand the specified tests. All forgings shall be of uniform quality, free from defects and imperfections that may affect their serviceability or durability. Special quality, fine grain, hot rolled or cold finished carbon steel may also be used.

Design. The bars, otherwise meeting the requirements of this specification, may be the manufacturer’s standard design.

Finish. The bars shall be free from burrs, roughness and excessive oxide scale. The body of the bars shall be either lacquered, enameled, painted, or have an oil-coated natural finish. The work ends of Type VII bars shall have a satin finish, and shall be oil or phosphate coated, lacquered or painted.

Type VII, digging. Digging bars at one end shall be provided with a formed bit, finished, and uniformly tapered having a cutting edge ground to a double-beveled edge. The opposite end of the bar shall terminate in a round uniform tapered point. The bar shall conform to table I and be similar to figure 1.

Table I. Type VII, digging bar

DISTRIBUTION STATEMENT A. Approved for public release. Distribution is unlimited.