The problems of forecasting the static, dynamic and fatigue strength of products made from unidirectionally reinforced fiberglass rods. Based on the ultimate strain at break glass, the rule of mixtures and experimental data, estimated the impact of reducing the strength characteristics and technical factors. As an engineering approach suggested empirical expression to account for the effect of temperature on the strength characteristics of fiberglass. It is shown that under static loading in the studied sites connection rod with metal end sleeve realized from 40 to 60% of the resource strength of fiberglass. The expressions for predicting the effect of duration of load action on the strength of products made of unidirectionally reinforced fiberglass. The results of tests cyclically varying tensile load of the two types of compounds fiberglass rods with metal end sleeve. Proposed expressions that evaluate the impact of the strength of the number of load cycles and load parameters change.