FEMALE SCREW LOCK EXTERNAL THREAD INTERNAL THREAD 8630-01 8630-01A 8630-01B M3 M3 4-40 UNC 2A M3 4-40 UNC 2 4-40 UNC 2B UNC 4-40,2B ORD-CODE EXTERNAL INTERNAL THREAD THREAD THREAD UNC 4-40,2B THREAD C-DSUB-0068 6 PDM: Rev:G STATUS:Released Printed: Aug 23, 2006.