WING NUT, MATERIAL ZINC ALLOY, MATERIAL GRADE/CLASS NOT GRADED, FINISH ZINC PLATED, LOCK TYPE NYLON INSERT, WING SHAPE SQUARE, THREAD SIZE 1/4 IN.-28, DIMENSIONAL STANDARDS ASME B18.17, MATERIAL QUALITY STANDARDS ASME B18.6.9, ZAMAC TYPE 3, MATERIAL FABRICATION DIE CAST, MAXIMUM WING SPAN 1 1/4 IN, OVERALL HEIGHT 0.594 IN, BASE DIAMETER 7/16 IN, BODY HEIGHT 19/64 IN, FLANGE DIAMETER NOT APPLICABLE, FLANGED NO, SYSTEM OF MEASUREMENT INCH, PACK SIZ