A-A-51533
8 July 1986
COMMERCIAL ITEM DESCRIPTION
SCREW, BONE (WOODRUFF HEAD)
The General Services Administration has authorized the use of this commercial item description.
This commercial item description covers head bone pins with standard points for use directly on thick cortices or with bone plate that accept conically-headed bone screws in the diaphyseal region of bones.
Salient characteristics.
Characteristics. Bone screw shall be in accordance with Figure 2 of ASTM F543. Shall be No.6M bone thread, 20 threads per inch buttress thread. Screw shall have a fluted tapping point.
Material. Bone screw shall be fabricated from cold drawn wire conforming to the composition specified in ASTM F138, Grade 2.
Surface preparation. Description of surface characteristics and methods of surface preparation shall be in accordance with ASTM F86.
Finish. The completed bone screw shall have a mirror finish, properly passivated.
Corrosion properties. Bone screws shall show no evidence of corrosion when subjected to the following tests:
Intergranular corrosion. The intergranular corrosion susceptibility test specified in ASTM F138.
Saline. Bone screws shall be completely immersed into Normal Saline Solution (USP), and while immersed, placed into an oven at a temperature of 37o ± 1oC for a period of seven days, removed from the oven and examined for corrosion while still immersed.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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