All the below posts are what I sent to another thread where we started this great treasure hunt. I thought it better to get more of the backround info in one place.
This FSN: 2530-735-1411 was assigned on 01-01-1963.
Part of your problem when looking for info is maybe that you entered that FSN. In the 70's we went the NSN. So if you insert two zeros, NSN: 2530-00-735-1411, you start to get more info.
That NSN is discontinued, and there were a number of sub NSN's.
2530-00-098-6204
2530-00-932-8938
2530-00-737-5334
2530-00-735-1411
The original FSN had the part number of, (and I don't know what was on the box, might be different) of 00640178. In any case, there were other part numbers:
00640178
17476
17476X
640178
737334
And there may be lots more NSN's and part numbers. I will try looking maybe tonight.
Below is tech data of the components in the box. Normally there is an "End Item" listing attached to the NSN. But sadly, none here. Probably because its so old. This looks like an interesting few hours detective work!
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0 133/250 INCHES NOMINAL |
| TAPER LENGTH | 0 84/125 INCHES NOMINAL |
| THREAD SIZE | 1-1/2-20 |
| SCREW THREAD SERIES DESIGNATOR | UNF |
| DESIGN TYPE | BALL STUD |
| REMOVABILITY FEATURE | INCLUDED |
| BALL STUD | INCLUDED |
| TAPERED BEARING SURFACE MAJOR DIAMETER | 0 5/8 INCHES MINIMUM AND 629/1000 INCHES MAXIMUM |
| ROD CONNECTING END THREAD LOCATION | EXTERNAL |
| ROD CONNECTING END THREAD SIZE | 11/16-18 |
| ROD CONNECTING END THREAD SERIES DESIGNATOR | UNS |
| ROD CONNECTING END THREAD DIRECTION | LEFT-HAND |
| ROD CONNECTING END THREAD LENGTH | 2 47/500 INCHES NOMINAL |
| LOCKING CLAMP TYPE | SEPARATE |
| FSC APPLICATION DATA | VEHICULAR BRAKE,STEERING AXLE,WHEEL AND TRACK COMPONENTS |