A-A-2555
March 17, 1988
COMMERCIAL ITEM DESCRIPTION
DRILL, MASONRY, HAND
(STAR (FOUR-FLUTE) DRILL)
The General Services Administration has authorized the use of this commercial
item description in preference to Federal Specification GGG-D-691, Type I.
This commercial item description covers star masonry hand
drills for manual use.
SALIENT CHARACTERISTICS
Design. The cutting end shall have four cutting edges and shall have an
equal number of flutes. The cutting face shall be slightly pointed and edges
shall be sharp. The striking end shall be slightly chamfered. The body shall be
either octagonal or hexagonal in cross section.
Material. All drills shall be forged from a high quality, wear- and
shock-resistant steel conforming to SAE 9255 or AISI 9255. The drills shall be
hardened and tempered so that they will withstand the test specified.
Finish. Drills shall have a lacquered, enameled, or oil-treated natural
finish at the option of the contractor.
Sizes. See Table I.
Table I. Star (four-flute) drill
|
National Stock Number |
Nominal Size Inches |
Diameter cutting end |
Stock size Min Inches |
Length fluted section (Min) Inches |
Length overall (approx) Inches |
|
|
Inches |
Inches |
|||||
|
5110-00-240-6141 |
1/4 |
0.250 |
0.281 |
3/16 |
1-1/4 |
12 |
|
5110-00-236-2047 |
3/8 |
j.375 |
.410 |
5/16 |
1-3/8 |
12 |
|
5110-00-196-7105 |
1/2 |
.500 |
.531 |
3/8 |
1-3/4 |
12 |
|
5110-00-234-1956 |
5/8 |
.625 |
.680 |
7/16 |
2 |
12 |
|
5110-00-221-8134 |
5/8 |
.625 |
.680 |
7/16 |
2 |
18 |
|
5110-00-236-2046 |
3/4 |
.750 |
.795 |
1/2 |
2-1/4 |
12 |
|
5110-00-223-1105 |
3/4 |
.750 |
.795 |
1/2 |
2-1/4 |
18 |
|
5110-00-234-1957 |
7/8 |
.875 |
.921 |
5/8 |
2-1/2 |
12 |
|
5110-00-236-2049 |
1 |
1.000 |
1.046 |
11/16 |
2-1/2 |
12 |
|
5110-00-223-7341 |
1 |
1.000 |
1.046 |
11/16 |
2-1/2 |
18 |
|
5110-00-186-7099 |
1-1/8 |
1.125 |
1.171 |
3/4 |
2-3/4 |
12 |
|
5110-00-234-1923 |
1-3/4 |
1.750 |
1.812 |
1-1/8 |
3-5/8 |
36 |
Identification marking. Each drill shall be etched or
stamped in a permanent and legible manner with the manufacturer’s name or
identifying symbol of such known character that the source may be readily
identifiable, part number, and country of origin.
Workmanship. All drills shall be free from imperfections which may
affect their safety, appearance, serviceability, or durability.
DISTRIBUTION STATEMENT A: Approved for Public Release; Distribution is
unlimited.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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