Wiper Arm ?

I replaced my cowl mesh screen with the plastic replacements from the parts place . So i had to remove my wiper arms to replace the screen when i took them off i noticed this extra arm thingy hanging there. Would anyone be able to tell me what this is ? and its purpose or if it even is correct for my car? Picture is not my wiper but looks just like it
Thanks for the Help Ricky

 

Thanks Jason i just went out and that little stud thing is there And i put it right back on Thanks for the help i was thinking i had the wrong wiper arm
Thanks again for the help:TU:

 

I've been dealing with that arm on my car since I got it. At full travel it holds the top most part of the wiper blade back so that it matches the edge of the windshield. If you swapped on a modern arm or even the passenger side arm it would allow the top tip of the blade to overhang the glass which could cause damage to the moulding or could cause lifting at speed.

Just make sure you don't lose the clip that holds the arm to the stud. Mine has no clip and anytime I put on the wipers the arm comes off the stud and the wiper starts flapping like a fish on the beach ou:

On a related note, where can you get the clip that holds the arm to the stud?

 

ou: I am missing the clip also

 

I was wondering if the whole wiper trans had to be replaced or not. I am missing the stud so what I did was take a pair of x body wipers and throw them on. Believe it or not they work perfect, no angle issues or coming off the glass and it clears off just as much rain as original wiper arms. Just a thought if you aren't ready to replace the wiper assembly.

 

What are x body wipers? Which body (car model and years) is the x body.

 

x-body is the nova/omega/ventura/apollo

I'd imagine it's because the x-body glass is small enough that the wipers don't have to run as long and therefor don't sit as high. On the fullsize cars the wipers may be too short. For the a-body it may work perfectly.

 

I found a clip But you have to buy the whole wiper arm Let me know if you need the info

 

Looking great !