A-A-54541
6 December 1991
COMMERCIAL ITEM DESCRIPTION
SPREADER, PLASTIC CAST (Stryker)
The General Services Administration has authorized the use of this commercial item description.
This commercial item description covers a plastic cast spreader of the Stryker design suitable for separating saw-cut plastic casts with single-hauled operation.
Salient Characteristics:
General. The spreader shall have 2 jaws on each blade. Each blade shall be serrated to the outside (see drawing). Each handle shall have a safety stop. The handles shall be spring-loaded with the spreader halves held together with 2 screws. The spreader weight shall not exceed 14 ounces.
Material. Material of the spreader shall be either Class 4 martensitic stainless steel in accordance with ASTM Designation F899, or annealed, chromium-over-nickel plated steel alloy AISI No. 6150H or 8650H. The spring, screws, and pivot pin shall be fabricated from Class 3 austenitic stainless steel in accordance with ASTM Designation F899.
Style, design and dimensions. The spreader shall be in accordance with Defense Personnel Support Center (DPSC) Drawing No. 24292 for style, design and dimensions.
Hardness. The jaws shall have a Rockwell Hardness C scale (HRC) of 50 to 55 and the pivot pin shall have a Rockwell Hardness C scale (HRC) 30 to 35 when tested in accordance with ASTM E18 or E92, whichever is applicable. Conversion of hardness values shall be in accordance with ASTM E140.
Finish. The spreader shall have a mirror, satin, or matte finish. The matte finish shall exhibit a uniform non-directional surface texture equivalent to that produced by lightly blasting the prepared surface with fine abrasives under pressure. Plated surfaces shall be bright and smooth.
Passivation. The spreader shall be properly passivated.
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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