METRIC STANDARD PARTS 8 970 PLUG EXPANSION GROUP UNIT DIAMETER PART NO MATERIAL PRIME USE PKG M18 94000098 Steel 1 531 10 M56 94000093 Steel 8 970 PLUG EXPANSION CUP SHAPE GROUP UNIT DIAMETER PART NO FINISH PRIME USE PKG M34 1 1056092 Zinc M36 11070802 Zinc WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION 89 398