INCH-POUND A-A-50098B February 24, 2000
SUPERSEDING A-A-50098A February 21, 1990
COMMERCIAL ITEM DESCRIPTION
STOPPER, HEXAGON, IRREGULAR
The General Services Administration has authorized the use of this Commercial Item
Description for all Federal agencies.
1. SCOPE. This commercial item description covers the requirement for irregular hexagon stoppers to be used to provide security for personnel and equipment in
operations invoking steep ascents by placing the irregular hexagon stoppers into cracks in rocks. This piton is also known as a Hexentric Nut.
2. CLASSIFICATION. The irregular hexagon stoppers shall be of the following sizes:
Size I - 1.625 + 0.100 inches width x 1.125 + 0.100 inches length and weight shall be 1.02 ounces.
Size IIB - 2.250 + 0.100 inches width x 1.625 + 0.100 inches length and weight
shall be 2.46 ounces.
The hexagon stoppers, (sizes I and IIB), shall be measured for width on their parallel
sides. The length shall be measured along the longest dimension, perpendicular to width measurement.
3. SALIENT CHARACTERISTICS.
3.1 Design and construction. The hexagon stoppers shall be 6061 - T6 aluminum. They shall have four holes sufficiently wide enough to accept an 8-mm rope with which to
sling the irregular hexagon. Color shall be natural. Each item shall be stamped with the
manufacturer's identification symbol (see figure I).
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: Defense Personnel Support Center, Clothing and Textiles Directorate, Attn: DSCP-COET, 700 Robbins Ave, Philadelphia, PA 19111-5096.
AMSC N/A FSC 8465
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