STANDARD PARTS 8 900 C0n t HEX IIIITH PLAIN LOC KIIASHER THREAD UNIT SIZE LENGTH PART NO GRADE PKG 20 5 B 3856691 275 M 10 5 5 12 3 9424774 1 5 5 18 5 B 3973388 275 M 1 5 Is 18 1 4405445 275 M 5 5 18 18 1 U 4405449 275 M 5 SPECIAL BOLT U THREAD UNIT SIZE LENGTH PART NO PKG 8 16 2 I 2479330 1 9 6 12 6 5125945 300 M 1 8 902 STEP BOLTS THREAD UNIT SIZE LENGTH PART NO PKG 4 20 2 z 128632 50 4 20 3 128640 1 1974 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 24 8 900 8 902 sP 42