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FORD WD953

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FORD WD953 2011 Edition, April 29, 2011 MATERIAL AND PERFORMANCE OF SCREWS FOR USE IN PLASTICS

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$17.50

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Description / Abstract: This specification covers the evaluation of performance of thread forming screws, in the nominal diameter range 1.8mm to 6.0mm inclusive, designed to be assembled into thermo-plastics. The assessment criteria by which products are accepted is a ratio of stripping torque against drive torque which must not be less than 2.5.