Briggs & Stratton Screw 594761 1.40 x 0.50 x 0.50 Genuine OEM. This is a Genuine OEM Briggs & Stratton part. This screw (part number 594761) is for lawn and garden equipment engines. Follow appropriate safety practices when installing screw 594761.... - Briggs & Stratton Screw 594761 1.40 x 0.50 x 0.50 Genuine OEM.